Populations and the Environment Answers

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Which description shows competition in an environment?

A
an organism that feeds on some food
B
an organism that finds a place to sleep
C
three organisms of the same species living in an area
D
three organisms battling over limited resources
4

A drought is a long period of dryness. If animals fight during a drought, which basic need is most likely limited?

A
water supply
B
shelter or space
C
the ability to reproduce
D
the availability of sunlight
5

Which statement describes a population in which there is a competition for energy?

A
Several lions fight over a recent animal kill.
B
Male peacocks fight one another for a female.
C
Elephants are in search of water during a dry season.
D
Squirrels are searching for a new place to make a nest.
7

Which statement describes a biotic factor interacting with the environment?

A
Water flows down a creek bed.
B
Soil contains nutrients for growth.
C
Deer graze through the grassland.
D
The sun emits solar rays that reach Earth.
9

Which factor do trees need when they compete for energy?

A
soil
B
sunlight
C
space
D
ability to reproduce
10

Which descriptions can be used for sand on a beach?

A
abiotic factor, once living
B
biotic factor, living thing
C
biotic factor, nonliving thing
D
abiotic factor, nonliving thing

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