AnswersEarth and Space A 26-27Populations and the Environment

Populations and the Environment Answers

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1
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Which is considered the foundation level of organization in an environment?

A
community
B
ecosystem
C
organism
D
population
2
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Plants absorb nutrients from soil, and nutrients help plants grow. Which level of organization best describes this interaction between plants and soil?

A
community
B
ecosystem
C
organism
D
population
3

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.
4

Which factor do trees need when they compete for energy?

A
soil
B
sunlight
C
space
D
ability to reproduce
5

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

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