Spheres of Earth Answers

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Which interaction involves only one of Earth’s spheres?

A
Plant roots take in water from the soil.
B
Plants take in carbon dioxide from the air.
C
During photosynthesis, plants make food and release oxygen into the air.
D
Energy stored in plants is transferred to humans and animals that eat them.
4

Which phrase best describes the biosphere?

A
the rocks on land and in the water
B
the plants on land and in the water
C
the animals in the air, on land, and in the water
D
the organisms in the air, on land, and in the water
5

Which scenario describes an interaction between two different Earth spheres?

A
Water flows from a stream to a lake.
B
Gravity moves rocks to another location.
C
Lions use energy to catch other animals for food.
D
Bears dig big holes in the ground to protect their young.
6

Seaweed belongs to which of Earth’s spheres?

A
atmosphere
B
biosphere
C
geosphere
D
hydrosphere
9

Which sphere protects Earth’s surface?

A
atmosphere
B
biosphere
C
geosphere
D
hydrosphere
10

Which statement describes an effect that humans have on the geosphere when they build a dam?

A
Ice may form on the lake.
B
Plants may grow on the dam.
C
Rocks and minerals are used to build the dam.
D
Water from the lake may evaporate into the air.

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