Aquatics test #2

What is the process of water turning to water vapor?

• evaporation

• precipitation

• condensation

What is the process of bacteria changing nitrogen gas into nitrates?

• condensation

• nitrogen fixation

• carbonation

What form of nitrogen do plants use to make energy?

• nitrogen gas

• nitrates

• they do not use nitrogen for anything

The process that causes clouds to form is called

• condensation

• evaporation

• sublimation

when ice immediately turns into water vapor, it is called

• transpiration

• sublimation

• evaporation

What is the pH of water?

• 1

• 7

• 14

Approximately how much of earth is covered in water?

• 25%

• 50%

• 70%

What percent of earths water is salt water?

• 25%

• 75%

• 97%

What percent of earths water is fresh water?

• 3%

• 10%

• 50%

What is considered a carbon sink?

• the ocean

• the rain forest

• the desert