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1 Which of Earth's spheres consists of all living things?(1 point)

hydrosphere

atmosphere

biosphere

geosphere

2 In which of Earth's spheres does the stratosphere exist?(1 point)

hydrosphere
hydrosphere

biosphere
biosphere

atmosphere
atmosphere

geosphere

3 Which of the following correctly describes interactions among Earth’s spheres?(1 point)

They are drastically different and never interact.
They are drastically different and never interact.

They are identical and continuously interact.
They are identical and continuously interact.

They are closely related and rarely interact.
They are closely related and rarely interact.

They are closely related and continuously interact.

4 Which is an interaction between the geosphere and the biosphere that damages the atmosphere?(1 point)

dumping of pollutants into a river
dumping of pollutants into a river

overfishing of edible species
overfishing of edible species

the erosion of rock in the mountains
the erosion of rock in the mountains

the mining and burning of fossil fuels

5 What percentage of Earth's freshwater is found in lakes, rivers, and streams as surface water?(1 point)

69%

1%

30%

71%

6 Which of Earth's oceans is the largest by volume?(1 point)

Arctic
Arctic

Indian
Indian

Atlantic
Atlantic

Pacific

7 Which of the following statements is false?(1 point)

Lakes can be freshwater or saltwater.
Lakes can be freshwater or saltwater.

Only 1.2% of all of Earth's water is found in rivers, lakes, ponds, and streams.
Only 1.2% of all of Earth's water is found in rivers, lakes, ponds, and streams.

Of all of Earth's freshwater, only 1.2% is found in rivers, lakes, ponds, and streams.
Of all of Earth's freshwater, only 1.2% is found in rivers, lakes, ponds, and streams.

Estuaries are bodies of water that can contain salt

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