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Spring Semester Review

Total questions: 149

Worksheet time: 4hrs 48mins

Name
Class
Date
1.
Unicellular means...
a)
An organism is made of many cells
b)
An organism is made of one cell
c)
An organism is made of no cells
2.
Heterotroph is when an organism...
a)
Has to eat other things
b)
has to make it's own food
3.
Autotroph is when..
a)
An organism makes it's own food
b)
An organism has to eat other things
4.

A cell with nucleus is

a)

Autotrophic

b)

Prokaryotic

c)

Eukaryotic

d)

Heterotrophic

5.
Bacteria are all prokaryotic. What does it mean to be prokaryotic?
a)
Has a nucleus 
b)
Sometimes has a nucleus 
c)
Does not have a nucleus 
d)
Has a cell membrane 
6.
Organisms that break down dead animals and plants and their wastes are known as ______.
a)
scavengers
b)
autotrophs
c)
bacteria
d)
decomposers
7.
Archeabacteria...
a)
are eukaryotic
b)
live in extreme environments
c)
are non-living
d)
live in the soil
8.
What levels of classification are used in the scientific name?
a)
Kingdom + Phylum
b)
Kingdom + Species
c)
Genus + Species
d)
Phylum + Genus
9.
Term given to describe the 2 name naming system is:
a)
dichotmous key
b)
binomial nomenclature
c)
2 scientific names
d)
binomial key
10.

What kingdoms have organisms that are prokaryotic? (hint: 2 correct answers)

a)

animalia

b)

fungi

c)

eubacteria

d)

archeabacteria

11.
How many cells are found in Archaebacteria?
a)
Unicellular
b)
Multicellular
c)
Both
12.

A pine tree is a member of the kingdom

a)

Animalia

b)

Protista (Protists)

c)

Fungi

d)

Plantae (Plant)

13.
Which kingdom do humans belong to?
a)
Plantae
b)
Fungi
c)
Animalia
d)
Protista
14.
Examples are mushrooms and yeast
a)
Fungi
b)
Protista
Protista
c)
Plantae
d)
Animalia
15.
Archeabacteria...
a)
are eukaryotic
b)
live in extreme environments
c)
are non-living
d)
live in the soil
16.
Organisms that are classified as autotrophic are able to-
a)
be seen with the human eye
b)
move
c)
reproduce
d)
make their own food
17.

All of the following have a nucleus except...

a)

Bacteria

b)

Animalia

c)

Plantae (Plant)

d)

Protista (Protist)

18.
What does the word eukaryote mean?
a)
A cell with a nucleus
b)
A cell with DNA
c)
A cell with a cell membrane
d)
A cell without a nucleus
19.

What kingdom has organisms that feed off dead or decaying organisms?

a)

Plantae (Plant)

b)

Fungi

c)

Protista (Protist)

d)

Archaebacteria

20.

Which 2 kingdoms has organisms that are all multicellular and eukaryotes?

a)

Animal and Plant

b)

Fungi and Animal

c)

Eubacteria and Plant

d)

Fungi and Plant

21.

What are the kingdoms that are eukaryotic? (select all that apply)

a)

animalia

b)

Fungi

c)

Protista

d)

Plantae

e)

Eubacteria

22.

What kingdoms are prokaryotic?

select 2

a)

animalia

b)

fungi

c)

eubacteria

d)

archeabacteria

23.
In which way do protists obtain food? 
a)
Autotroph
b)
Heterotroph
c)
Both
24.

True or False?


Bacteria can live in soil, water and in/on human bodies.

a)

True

b)

False

25.

True or False?


All protists are single-celled.

a)

True

b)

False

26.

Which of the following is not true about the Kingdom Animalia?

a)

they are multicellular

b)

they reproduce with a partner

c)

they use photosynthesis to produce food

d)

they can move from place to place

27.

True or False: Archaea Kingdom organisms can live in harsh environments like hot springs and hot ocean vents?

a)

True

b)

False

28.

True or False?


All life on earth can be placed into one of six groups based on their similarities.

a)

True

b)

False

29.

True or False?


Bacteria are single-celled organisms that pretty much live everywhere.

a)

True

b)

False

30.

How much energy gets transferred from one level of an energy pyramid to the next?

a)

10%

b)

5%

c)

90%

d)

50%

31.

What does the arrow in a food chain mean?

a)

The direction of energy flow

b)

Which animal is eaten

c)

The exchange of oxygen and carbon dioxide

d)

How energy gets broken down

32.

A rabbit eats grass. What is true of both the rabbit and the grass?

a)

The rabbit and the grass are both producer

b)

The rabbit and the grass are both consumers

c)

The rabbit is a producer and the grass is a consumer

d)

The rabbit is a consumer and the grass is a producer

33.

Which is possible based on the diagram?

a)

Sun → grass → robin

b)

Plant seeds → field mouse → robin

c)

Eagle → deer → plant seeds

d)

Grass → deer → mountain lion

34.

What first gets the energy from the sun?

a)

decomposers

b)

producers

c)

carnivores

d)

primary consumers

35.

Where does most energy come from

a)

primary consumers

b)

decomposers

c)

the moon

d)

the sun

36.

What does the arrow between the mouse and the owl represent?

a)

Energy flowing from the producer to consumer

b)

Energy flowing rom consumer to producer

c)

Energy flowing from the owl to the mouse

d)

Energy flowing from the mouse to the owl

37.

Breaks down plant and animal remains and waste into molecules that producers reuse to make energy

a)

Producer

b)

Decomposer

c)

Omnivore

d)

Carnivore

38.

Which of the following would be a primary consumer?

a)

hawk

b)

cheetah

c)

rabbit

d)

grass

39.

A consumer that eats only plants is a(n) ____.

a)

carnivore

b)

omnivore

c)

herbivore

d)

tertiary consumer

40.

What type of consumer would be at the top of an energy pyramid?

a)

Primary

b)

Secondary

c)

Tertiary

41.

Snakes can eat rabbits. What would happen to the rabbit population if the snake population doubled?

a)

The rabbit population would stay the same

b)

The rabbit population would go down

c)

The rabbit population would go up.

42.

What level would you expect to find at the bottom of an energy pyramid?

a)

tertiary consumer

b)

primary consumer

c)

secondary consumers

d)

Autotrophs/ producers

43.

A consumer that eats only producers.

a)

Primary Consumer

b)

Secondary Consumer

c)

Carnivore

d)

Omnivore

44.

An organism that makes its own food.

a)

Autotroph

b)

Heterotroph

c)

Herbovore

d)

Carnivore

45.

This shows the total energy available at each trophic level of an ecosystem.

a)

Energy Pyramid

b)

Food Chain

c)

Food Web

46.

This organism is always first on a food web.

a)

Plants

b)

The Sun

c)

Apex Predator

d)

Primary Consumer

47.

The energy organisms need to live and grow first enters the ecosystem when-

a)

decomposers break down dead organism

b)

plants take in light energy from the sun

c)

primary consumers eat plants for food

d)

secondary consumers eat primary consumers

48.

Which sequence describes the levels of organization from MOST organized to LEAST organized?

a)

Organism, Organ, Tissue, Cell

b)

Cell, Tissue, Organ, Organ System, Organism

c)

Cell, Organ, Tissue, Organ System

d)

Organism, Organ System, Organ, Tissue, Cell

49.
The model shows an area near a lake. Community leaders are planning new laws to help protect the lake from pollution. One proposed law will make it illegal to dump trash on the shore of the lake, but the law still allows trash to be placed in the area labeled "Flow-through" wetland." Which statement about the proposed law is supported by the model?
a)
The proposed law will protect the lake because plant roots between the wetland and the lake will stop pollution from entering the lake.
b)
The proposed law will not protect the lake because animals that live in or new the lake will add pollution to the lake.
c)
The proposed law will not protect the lake because groundwater will carry pollution from the wetland directly into the lake.
d)
The proposed law will protect the lake because the high elevation of the water table will block pollution from entering the lake.
50.
A student's model of an area new a city depicts many activities that affect the quality of the water in the area. How does the agricultural activity most likely affect the surface water of the area?
a)
Excess crop fertilizer is carried by runoff into the river, causing excess growth of water plants.
b)
Excess crop material accumulates on the riverbanks, slowing the movement of the river water
c)
Crops reduce erosion, increasing the amount of soil entering the river
d)
Crops absorb pure water from soil, causing the remaining water to contain more salt.
51.
A student drew the model to represent a part of a watershed and some human activities that affect the watershed. How do the industrial, agricultural, and residential activities of humans most likely affect the groundwater in the area?
a)
The activities prevent most of the water from evaporating into the atmosphere
b)
Pollutants from the activities percolate through the soil and enter the water table
c)
The activities replace the groundwater used.
d)
All of the above
52.
Some areas of an ocean are known as dead zones. These zones form when excess organic material decomposes. This increased decomposition uses up the oxygen from the water. Which human activity is most affected by the increasing number of dead zones in the ocean?
a)
Offshore oil drilling, because water in dead zones is toxic
b)
Commercial fishing, because fish cannot survive without oxygen
c)
Commercial shipping, because dead zones change the course of ocean currents
d)
Sand mining, because oxygen is not available to form the sands of ocean beaches
53.
A coastal area that once supported a thriving fishing industry is overfished. The number of species found living in the marine ecosystem decreases. Which of these activities is most likely to increase the natural biodiversity in the area?
a)
Building artificial reefs and limiting fishing activity
b)
Introduction non-native species to fill unoccupied habitats and banning fishing
c)
Building artificial reefs and increasing fishing activity
d)
Eliminating non-native species and encouraging fishing for large predatory fish
54.
Which of these human activities is most likely to cause the excessive growth of phytoplankton in the world's oceans?
a)
The use of chemical fertilzers that are carried by runoff into rivers
b)
The logging of old-growth forests, which results in erosion
c)
The spraying of chemical herbicides that reduce carbon dioxide in the air
d)
The mining of fossil fuels, which requires digging underground tunnels
55.
A company known as Arten Industries is wanting to build a factory in the watershed that is pictured. The company wants to limit the ecological impact it has on surrounding areas. Where should the company build its factory?
a)
top of the river so the rain can dilute the pollution
b)
away from the river so the pollution can not reach the river
c)
the middle of the river so the pollution can have time to settle.
d)
the bottom of the river so it effects a smaller amount of land
56.
The following computer model was created to illustrate how a watershed can be affected by human activities. What is the most likely reason for placing the farm land upstream from the factories?
a)
The water at the highest point of the river will have been impacted the least by human activities, so it should be the cleanest.
b)
Farms do not have a negative impact on watersheds, so they should be placed upstream.
c)
The factory puts pollution into the air, so it does not matter where the farm is located.
d)
The farm should be placed upstream because pesticides from the farm will end up in the river, which is beneficial for the factories downstream.
57.
What is a watershed?
a)
An area or ridge of land that separates waters flowing to different rivers, basins, or seas.
b)
Land consisting of marshes or swamps; saturated land.
c)
Water that collects on the surface of the ground.
d)
Water held underground in the soil or in pores and crevices in rock.
58.

Farmers can best reduce negative effects on the water quality of nearby streams and lakes by planting crops that

a)

produce less oxygen

b)

produce less carbon dioxide

c)

need less fertilizer

d)

need less solar energy

59.

Protects the body, regulates body temperature

a)

Integumentary

b)

Nervous

c)

Skeletal

d)

Muscular

60.

Carries oxygen and nutrients to all parts of the body.

a)

Integumentary

b)

Nervous

c)

Circulatory

d)

Respiratory

61.

Allows movement in the body

a)

Integumentary

b)

Nervous

c)

Skeletal

d)

Muscular

62.

Receives stimuli and transports impulses, coordinates actions and reactions in the body

a)

Integumentary

b)

Nervous

c)

Circulatory

d)

Respiratory

63.

Supports and provides structure for the body

a)

Skeletal

b)

Muscular

c)

Circulatory

d)

Respiratory

64.

Supplies blood with oxygen and rids the body of carbon dioxide

a)

Integumentary

b)

Nervous

c)

Circulatory

d)

Respiratory

65.

Main Organs: Skin

a)

Integumentary

b)

Nervous

c)

Skeletal

d)

Muscular

66.

Main Organs: Heart and blood vessels

a)

Integumentary

b)

Nervous

c)

Circulatory

d)

Respiratory

67.

Main Organs: Muscles

a)

Integumentary

b)

Nervous

c)

Skeletal

d)

Muscular

68.

Main Organs: Brains, spinal cord, nerves

a)

Integumentary

b)

Nervous

c)

Circulatory

d)

Respiratory

69.

Main Organs: Bones and joints

a)

Skeletal

b)

Muscular

c)

Circulatory

d)

Respiratory

70.

Main Organs: Lungs

a)

Integumentary

b)

Nervous

c)

Circulatory

d)

Respiratory

71.

What is the smallest unit of life in the human body

a)

Tissue

b)

Organ

c)

Cell

d)

Organism

72.

What is the main function of the Digestive System?

a)

Support/Protection

b)

Breaks down food

c)

Protect against germs

d)

Remove waste

73.

What is the main function of the Circulatory/Cardiovascular System?

a)

Moves materials

b)

Movement

c)

Control

d)

Support/Protection

74.

What is the main function of the Nervous System?

a)

Breaks down food

b)

Protect against germs

c)

Exchange gasses/remove waste

d)

Send and Receive information

75.

What is the main function of the Excretory System?

a)

Breaks down food

b)

Moves materials

c)

Remove waste

d)

Exchange gasses/remove waste

76.

What is the main function of the Respiratory System?

a)

Support/Protection

b)

Exchange gasses/remove waste

c)

Breaks down food

d)

Movement

77.

What is the main function of the Skeletal System?

a)

Send and Receive information

b)

Protect against germs

c)

Breaks down food

d)

Support/Protection

78.

What is the main function of the Muscular System?

a)

Remove waste

b)

Movement

c)

Exchange gasses/remove waste

d)

Control

79.

What is the main function of the Immune System?

a)

Movement

b)

Breaks down food

c)

Moves materials

d)

Protect against germs

80.

1. What body systems are mainly being used while running?

a)

Immune and Respiratory

b)

Respiratory and Muscular

c)

Nervous and Digestive

d)

Digestive and Skeletal

81.

What body Systems are mainly being used while sitting at lunch eating?

a)

Digestive and Immune

b)

Skeletal and Muscular

c)

Digestive and Muscular

d)

Nervous and Immune

82.

Which Body System is this?

a)

Skeletal

b)

Cardiovascular

c)

Nervous

d)

Digestive

83.

Which body system is this?

a)

Nervous

b)

Cardiovascular

c)

Immune

d)

Respiratory

84.

Which Body System is shown here?

a)

muscular

b)

Digestive

c)

Cardiovascular

d)

Respiratory

85.

Which body system is shown here?

a)

Cardiovascular

b)

Immune

c)

Digestive

d)

Nervous

86.

Which Body System is shown here?

a)

Digestive

b)

Respiratory

c)

Cardiovascular

d)

Nervous

87.

is a type of reproduction that requires only one parent. The resulting offspring are

identical to the parent.

a)

Asexual reproduction

b)

Sexual Reproduction

c)

Nonsexual Reproduction

d)

none of these answers

88.

can be easily wiped out by disease

a)

advantage of sexual reproduction

b)

advantage of asexual reproduction

c)

disadvantage of sexual reproduction

d)

disadvantage of asexual reproduction

89.

more energy is required to produce offspring and for that offspring to reach maturity

a)

advantage of sexual reproduction

b)

advantage of asexual reproduction

c)

disadvantage of sexual reproduction

d)

disadvantage of asexual reproduction

90.

takes longer to reproduce offspring

a)

sexual reproduction advantage

b)

asexual reproduction advantage

c)

sexual reproduction disadvantage

d)

asexual reproduction disadvantage

91.

Allows for diversity and evolution of a species

a)

sexual reproduction advantage

b)

asexual reproduction advantage

92.

Increases genetic variation within a species

a)

Sexual Reproduction Advantage

b)

Asexual Reproduction Advantage

93.

Can adapt easier to an environmental change

a)

Sexual Reproduction Advantage

b)

Asexual Reproduction Advantage

94.

Which is not a type of asexual reproduction?

a)

budding

b)

fission

c)

fertilization

d)

regeneration

95.

Organisms produced asexually have (the same/half) the number of chromosomes as

the parent organism.

a)

the same

b)

half

96.

Organisms produced asexually are (identical/similar) to parent organisms.

a)

identical

b)

similar

97.

(Plants) uniform

offspring grow from

runners that take root in

the ground and reproduce

through mitosis

a)

Binary Fission

b)

Budding

c)

Fragmentation/ Regeneration

d)

Vegetative Propagation

98.

Offspring grows from a

piece of its parent

through mitosis

a)

Binary Fission

b)

Budding

c)

Fragmentation/ Regeneration

d)

Vegetative Propagation

99.

Bud grows from the body

of parent organism

through mitosis

a)

Binary Fission

b)

Budding

c)

Fragmentation/ Regeneration

d)

Vegetative Propagation

100.

How do the number of chromosomes in an asexually reproducing plant compare to its parents?

a)

They are double the number.

b)

They are the same.

c)

They are half the number.

d)

They are one-fourth the number.

101.

Bacteria reproduce by dividing through a process called binary fission. Which type of

reproduction is described above?

a)

Sexual

b)

Asexual

c)

Meiosis

d)

Fertilization

102.

How does the DNA of an asexually reproducing plant relate to its parent(s)?

a)

Its DNA is a combination of two parent’s DNA.

b)

Its DNA has mutations.

c)

Its DNA is identical to its parent.

103.

only need 1 parent to reproduce

a)

advantage of sexual reproduction

b)

advantage of asexual reproduction

c)

disadvantage of sexual reproduction

d)

disadvantage of asexual reproduction

104.

Describe the difference between sexual and asexual reproduction.

a)

Sexual reproduction requires one parent, but asexual requires two.

b)

Sexual reproduction produces identical offspring, but asexual produces offspring that are

a combination of both parents.

c)

Sexual reproduction requires two parents, but asexual requires one.

d)

Sexual reproduction is faster than asexual reproduction.

105.

Which process produces offspring from two parents?

a)

Asexual Reproduction

b)

Sexual Reproduction

c)

Binary Fission

d)

Budding

106.

genetically identical and less able to survive environmental changes

a)

advantage of sexual reproduction

b)

advantage of asexual reproduction

c)

disadvantage of sexual reproduction

d)

disadvantage of asexual reproduction

107.

produces new organisms from the combined DNA of two parents. In __________, gametes (sex cells: sperm cells from father and egg cells from mother) formed during

meiosis combine during a process called fertilization.

a)

Asexual Reproduction

b)

Sexual Reproduction

c)

Nonsexual Reproduction

d)

None of these answers

108.

must locate a mate to reproduce

a)

advantage of sexual reproduction

b)

advantage of asexual reproduction

c)

disadvantage of sexual reproduction

d)

disadvantage of asexual reproduction

109.

requires less energy to reproduce

a)

advantage of sexual reproduction

b)

advantage of asexual reproduction

c)

disadvantage of sexual reproduction

d)

disadvantage of asexual reproduction

110.

can reproduce quickly

a)

advantage of sexual reproduction

b)

advantage of asexual reproduction

c)

disadvantage of sexual reproduction

d)

disadvantage of asexual reproduction

111.

A species can better adapt if it is (genetically identical/genetically diverse).

a)

genetically identical

b)

genetically diverse

112.

genetically similar and less able to survive environmental changes

a)

advantages of sexual reproduction

b)

advantages of asexual reproduction

c)

disadvantages of sexual reproduction

d)

disadvantages of asexual reproduction

113.

can easily be wiped out by disease

a)

advantages of sexual reproduction

b)

advantages of asexual reproduction

c)

disadvantages of sexual reproduction

d)

disadvantages of asexual reproduction

114.

Natural selection

a)

organisms better adapted to their environment tend to survive and produce more offspring

b)

process used by humans to develop new organisms with desirable characteristics

115.

Selective breeding

a)

organisms better adapted to their environment tend to survive and produce more offspring

b)

process used by humans to develop new organisms with desirable characteristics

116.

"Survival of the fittest" describes which theory

a)

Natural selection

b)

Selective breeding

117.

Which is an example of selective breeding?

a)

A giraffe's long neck.

b)

Clipping a horse's tail so it's not too long.

c)

Training a horse to run faster.

d)

Cross breeding a labrador retriever with a poodle .

118.

Which organisms are most likely to survive?

a)

The strongest

b)

The best adapted

c)

The fittest

d)

The most athletic

119.

The long and sharp beak of a woodpecker is an example of

a)

natural selection

b)

selective breeding

120.

Natural selection is where ___________ decides which traits should be passed on.

a)

nature

b)

a human

c)

traits

d)

evolution

121.

Selective breeding is where _____________ decides which traits should be passed on.

a)

nature

b)

a human

c)

traits

d)

evolution

122.

Which statement best describes natural selection?

a)

A lion eating another animal.

b)

A farmer selecting the cows that will breed.

c)

A dog breeder.

d)

A botanist creating a new colored flower.

123.

Which statement best describes selective breeding?

a)

Survival of the fittest.

b)

Evolution.

c)

Breeding for a desired trait.

124.

How can farmers best use selective breeding to increase apple production?

a)

By limiting the number of trees growing so they can have more space.

b)

By choosing trees that are the largest in size.

c)

By increasing the amount of water and fertilizer the trees receive.

d)

By choosing trees that consistently have the most apples.

125.

Over time, honey suckle flowers develop a sweet smell to attract pollinators. This is an example of

a)

selective breeding

b)

extinction

c)

natural selection

d)

evolution

126.

What word describes the process of having the advantageous traits that helps an organism survive and reproduce?

a)

Natural selection

b)

Selective breeding

127.

Selective breeding is where ___________ decides which traits should be passed on

a)

Nature

b)

A human

c)

The organism

d)

The cells

128.

When farmers breed specific plants to produce fruits with specific traits

a)

Natural Selection

b)

Selective Breeding

129.

All these birds are finches but they have developed different beaks due to the type of foods available to them, this is because of

a)

Natural Selection

b)

Selective Breeding

130.
This sequence of pictures of a population of mice in the wild BEST represents _______. 
a)
natural selection
b)
selective breeding 
c)
inbreeding (selective breeding that crosses two organisms with similar genetic traits. )
d)
asexual reproduction
131.
The trees these moths used to live on were white, but have been covered in soot from coal factories. Which moth will be more successful in this environment?
a)
Dark moth
b)
Light moth
c)
Both will be equally successful
d)
Neither will be successful
132.
Why is the mouse population changing over time?
a)
The light mice can reproduce more successfully than the dark mice
b)
The hawks eat more dark mice than light mice because the dark mice taste better
c)
The hawks eat more light mice than dark mice because they can see the light mice more easily
d)
The hawks eat more dark mice than light mice because they can see the dark mice more easily
133.
According to the theory of natural selection, what is likely to happen to a population of birds after the seeds they normally eat are no longer available and all that is left are seeds that are harder to crack open? 
Note: a population is a group of individuals of the same species.
a)
The individual birds that already have the kind of beak that allows them to eat the seeds that are harder to crack open would be more likely to survive and reproduce.
b)
All of the individual birds would develop new beaks as they attempt to eat new seeds.  All of the birds would survive and reproduce.
c)
Some of the individual birds would try to develop new beaks so that they could eat the seeds.  Those birds would be more likely to survive and reproduce, and the other birds would likely die.
d)
Because the population of birds is all of the same species, they all have the same physical traits.  No individual bird would have an advantage in cracking open the seeds, and all of the birds would die. 
134.

How do biodiversity and stability work together?

a)

The lower the biodiversity the greater the stability of an ecosystem.

b)

The higher the biodiversity, the less stable the ecosystem

c)

The higher the biodiversity, the greater the stability of the ecosystem.

d)

Biodiversity has nothing to do with ecosystem stability.

135.
High biodiversity is 
a)
having a lot of the same organism.
b)
having a few of the same organism.
c)
having a lot of variety of different organisms.
d)
only having one of each organism. 
136.

Which ecosystem is more likely to survive a change in the environment?

a)

One with High biodiversity

b)

One with Low biodiversity

137.

Which shows more biodiversity Image A or Image B. Why?

a)

Image B is more biodiverse, because shows more different species than image A.

b)

Image A is more biodiverse, because shows a greater number of organisms that image B

c)

Both images show the same biodiversity

138.
Which habitat exhibits the greatest biodiversity?
a)
A habitat with 15 different species with about 300 individuals each
b)
A habitat with 10 different species with about 75 individuals each
c)
A habitat with 4 different species with about 150 individuals each
d)
A habitat with only one species with about 2000 individual
139.

Which statement best describes an example of high biodiversity?

a)

A pond ecosystem is populated by a single species of frogs

b)

A state park that includes multiple forest and freshwater ecosystems with many different species of fish, birds and frogs in a variety of colors

c)

A desert ecosystem is populated by organ pipe cacti, camels, and armadillo lizards

140.

Why is biodiversity important to ecosystems?

a)

It helps populations adapt to ecological changes.

b)

It increases at each level of the food chain.

141.
What is a watershed?
a)

One body of water that drains into a larger body of water

b)

A collection of water underground that can be used as a water supply

c)

An area of land that drains into a specific body of water

142.

How do most pollutants get into our watershed?

a)

Factories dump pollution into creeks and rivers

b)

Runoff from heavy rain carries it into creeks and rivers

c)

Oil spills leak into creeks and rivers

143.

Why should we be concerned with runoff water from neighborhood and city streets that goes into storm drains?

a)

It can host alligators and other dangerous animals

b)

It can get into water pipes and flood houses and businesses

c)

It isn't filtered or cleaned and empties directly into creeks

144.
Excess nutrients can be harmful to our watershed. Where do excess nutrients, such as nitrogen and phosphorous, typically come from?
a)

Sediment or dirt

b)

Oil and chemical spills

c)

Overuse of fertilizers

145.

High levels of sediment in the water can be harmful to aquatic plants and animals. Which of these human activities can lead to soil erosion?

a)

Applying fertilizer on lawns and crops

b)

Allowing pet waste to wash into the watershed during rains

c)

Construction sites for new neighborhoods and businesses

146.
Pet owners should pick up pet waste instead of leaving it on the ground. How can this help protect our watershed?
a)

It reduces the bacteria and nutrients that get into our water

b)

It keeps the water from getting muddy

c)

It helps the water smell clean

147.

Excess nutrients in the water can be harmful, because they lead to -

a)

High levels of sediment in the water

b)

Pathogenic (disease causing) bacteria in the water

c)

Algae blooms and low oxygen levels in the water

148.

A positive way to improve watershed is

a)

Leave trash in the water ways

b)

Spray fertilizer on the soil

c)

Plant grasses, shrubs, and trees near water

149.

How could liquid pollution on the surface often end up polluting the groundwater deep underground?

a)

It can percolate through the soil and reach the groundwater

b)

Strong winds can blow it into the cracks of rocks

c)

It can enter the water cycle and go into caves

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