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WorksheetsHuman Activity and Ecosystems
Total questions: 20
Worksheet time: 22mins
Name
Class
Date
1.
Reduce, reuse, and recycle are the three R’s of
a)
Population control
b)
Pollution
c)
Natural selection
d)
Conservation
2.
Fill in the table showing the positive impacts of human interaction on the environment.
a)
Larger landfills and coal power
b)
Recycling and solar power
c)
Recycling and coal power
d)
Larger landfills and bottling water
3.
What happens when humans cut down forests to build shopping malls?
a)
Plants and animals thrive in the new environment and pollution decreases.
b)
New animals species form and plants produce more oxygen.
c)
The shopping mall reduces the amount of pollution in the area.
d)
Habitat is altered, plants and animals destroyed, and pollution increases.
4.
____________ is the addition of harmful materials to the environment.
a)
pollution
b)
ecotourism
c)
conservation
d)
recycle
5.
Pollution can cause harm to the ___________.
a)
air
b)
land
c)
water
d)
all of the above
6.
To __________ means to collect old, used materials, and to process them and make them into new items.
a)
compost
b)
decomposer
c)
litter
d)
recycle
7.
The acidity of a local stream would most likely be affected by
a)
a change in the percentage of decomposers living in the stream
b)
a new source of air pollution
c)
a new predator species being introduced to the ecosystem
d)
a decrease in the amount of sunlight that reaches the stream
8.
Many common products, such as wooden furniture, paper, and books, are made from trees. Which of the following is a likely consequence of humans cutting down a forest in order to make use of the natural resources there?
a)
the decrease of chemical runoff into the oceans
b)
increased acid rain
c)
the increase of light pollution in cities
d)
the destruction of habitats
9.
When fertilizers run off farmland into streams and ponds, the nitrogen content of the water increases. This can lead to rapid growth of algae in a process called eutrophication. How can this process affect other organisms in the water?
a)
Oxygen is used up as algae is decomposed, reducing the amount available to other organisms.
b)
The water becomes better able to support aerobic organisms.
c)
The algae provide food for fishes and other organisms, leading to decreased algae populations.
d)
The extra nitrogen provides additional food for the other organisms, increasing their population.
10.
What are some consequences of deforestation?
a)
increased population in cities
b)
building of more infrastructure
c)
soil erosion, loss of biodiversity, loss of ability to remove CO2
d)
more mercury and cyanide released into rivers
11.
Which of the following is NOT related to biodiversity?
a)
species diversity
b)
genetic diversity
c)
climate diversity
d)
ecosystem diversity
12.
Which of the following issues is the cause of the other environmental impacts caused by humans?
a)
pollution
b)
human population growth
c)
climate change
d)
habitat destruction
13.
Which of the following is NOT a method of energy conservation?
a)
taking public transportation to work (bus, subway)
b)
riding your bike to work
c)
walking to work
d)
driving alone in your car to work
14.
Fishermen have harvested certain fish to the point where the population of that fish is decreasing. This level of direct harvesting could cause
a)
ecosystems to be improved for future generations
b)
ecosystems to be severely damaged
c)
the restoration of environmental stability
d)
all other fish species to increase in number
15.
Conservation is the act of conserving, or protecting the environment, plants, and animals. What are some things you can do to help conserve our environment?
a)
leave water on, leave TV on, run dishwasher with 1 plate
b)
run the washing machine with 1 shirt
c)
leave the refrigerator door open
d)
turn off water, turn off lights, turn off TV
16.
wide variety of life on the planet
a)
biomagnification
b)
indicator species
c)
invasive species
d)
biodiversity
17.
Why is it important to conserve the biodiversity of Earth?
a)
to decrease the amount of global predator populations
b)
to decrease the stability of major global ocean currents
c)
to increase the stability of ecosystems during environmental changes
d)
to increase the amount of nonrenewable resources located in the lithosphere
18.
Kudzu has overgrown many parts of the southern and eastern US and native ground plants have disappeared from the area. This is an example of:
a)
Parasitism between kudzu and the native plants
b)
A predator prey relationship between ground plants and kudzu
c)
Competition occurring between the native and invasive species
d)
Commesalism occurring between the kudzo and native plants
19.
Water pollution that comes from many sources is considered...
a)
point source pollution
b)
nonpoint source pollution
c)
thermal pollution
d)
ocean pollution
20.
One way that humans could have a positive impact on local environments is to:
a)
generate waste products as a result of technological advances
b)
use resources that are renewable
c)
increase planting large areas of one crop
d)
increase the use of pesticides
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