NEW
Font size
S
M
L
XL
WorksheetsHuman Impact
Total questions: 10
Worksheet time: 27mins
Name
Class
Date
1.
What long-term impact could the destruction of large areas of forests have on Earth?
a)
decreased rates of erosion
b)
increased atmospheric carbon dioxide levels
c)
decreased amounts of acid rain
d)
increased atmospheric oxygen levels
2.
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
3.
If the population of a certain predator increases, there is often _______ its prey
a)
a decrease the population of
b)
an increase of the population of
c)
great news for its prey of
d)
no impact found on
4.
Invasive species are:
a)
non-native
b)
harmful to an ecosystem
c)
organisms that can lack predators in the new environment
d)
all of the answers are correct
5.
The number one threat to biodiversity
a)
pollution
b)
fragmentation
c)
habitat destruction
d)
limiting factors
6.
How can people reduce the amount of resources they use?
a)
make more landfills and garbage dumps
b)
buy products with lots of packaging
c)
use water, electricity, and gas conservatively and recycle metal, paper, and glass
d)
Think only about what you need right now and don’t worry about the future
7.
Which is a main cause of soil erosion?
a)
strong winds
b)
flash floods
c)
human activity
d)
fossil fuels
8.
Which organism would have the greatest concentration of pollution?
a)
zooplankton
b)
large fish
c)
fish-eating birds of prey
d)
small fish
9.
Insecticides are sprayed over a large area in an effort to reduce the number of grasshoppers that are eating the corn plants. How will this change affect this food chain?
a)
The number of grasshoppers will increase
b)
The number of lizards will increase
c)
The number of lizards and hawks will decrease
d)
The number of grasshoppers, lizards, and hawks will decrease
10.
All of the following are examples of environmental changes that can be caused by humans except -
a)
clearing land for housing developments
b)
pesticides
c)
volcanic eruption
d)
pollution
Reset
