What may happen if the snowshoe hare was removed from the food web pictured?

The shrew population would decrease due to being only hawk food source.

The insects in the habitat would increase.

The willow tree population would decrease.

Foxes would dies due to no food source.

Continued depletion of the ozone layer will most likely result in

an increase in the amount of ultraviolet radiation reaching the earth

a decrease in atmospheric pollutants

an increase in marine ecosystem stability

The acidity of a local stream would most likely be affected by

a new source of air pollution due to burning fossil fuels

a change in the percentage of decomposers living in the stream

a new predator species being introduced to the ecosystem

a decrease in the amount of sunlight that reaches the stream

Deforestation of areas considered to be rich sources of genetic material could limit future agricultural and medical advances due to

the maintenance of dynamic equilibrium

an increase in the ecosystem’s carrying capacity

the depletion of the ozone layer

The term biodiversity means:

a wide variety of plants and animals in an ecosystem

only a few types of plants and animals in an ecosystem

an ecosystem composed mostly of plants

an ecosystem composed mostly of animals

Based on the graph shown, how can you tell sea otters are a keystone species?

as sea otter population increases, biodiversity increases

as the sea otter population decreases, biodiversity increases

changes in the sea otter population have little effect on biodiversity

the sea otter population dereases due to the presence of urchins

In photosynthesis, plants use __________ to make _________

water, sun, and CO2; oxygen and sugar

nitrogen and water; CO2 and sugar

water and minerals; sugar and oxygen

Review: What is the carrying capacity of a population?

The most individuals a population that can be supported from the environment

How much weight a population can carry

The amount of food needed to fee a population

When a population grows without stopping

What is a limiting factor?

Something that causes the growth of a population to decrease

Something that causes a population to grow a lot

Limiting factors that affect large, dense populations more than small, scattered populations are called ________________.

Density dependent limiting factors

Density independent limiting factors

What is an invasive species?

An organism that is new to an environment that has negative effects on the environment.

An organism that is new to an environment that has positive effects on the environment.

An organism that is native to an environment that has negative effects on the environment.

An organism that is native to an environment that has positive effects on the environment.

Ecology

Authored by E Hyacinth

Biology

KG - University

NGSS covered

Used 17+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the original source of almost all energy in most ecosystems?

carbohydrates

sunlight

water

carbon

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

MULTIPLE CHOICE QUESTION

1 min • 1 pt

An organism that produces its own food supply from inorganic compounds is called a(an)

heterotroph

consumer

detritivore

autotroph

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the term for each step in the transfer of energy and matter within a biological community?

energy path

food web

trophic level

food pyramid

Tags

NGSS.MS-LS2-3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The energy at each trophic level in the pyramid of energy decreases by a factor of ____.

100

Tags

NGSS.MS-LS2-3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The living portions of the ecosystem.

Biotic factors

Abiotic factors

Tags

NGSS.MS-LS2-4

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Water temperature would be an example of ...

A biotic factor

An abiotic factor

Tags

NGSS.MS-LS2-3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A collection of organisms that belong to different populations but all live in the same area and interact with one another.

Population

Ecosystem

Community

Ecosphere

Tags

NGSS.MS-LS2-4

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Ecology

What is the original source of almost all energy in most ecosystems?

An organism that produces its own food supply from inorganic compounds is called a(an)

What is the term for each step in the transfer of energy and matter within a biological community?

The energy at each trophic level in the pyramid of energy decreases by a factor of ____.

The living portions of the ecosystem.

Water temperature would be an example of ...

A collection of organisms that belong to different populations but all live in the same area and interact with one another.

A place where an organism lives.

A collection of organisms that make up a community as well as all of the nonliving aspects of the environment.

Organisms that feed on both living producers and other consumers.

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