Nutrient Cycles

When water turns to vapor and rises into the atmosphere from the ocean, it is called

• condensation

• transpiration

• evaporation

• sublimation

Our atmosphere is _____% nitrogen gas

• 87

• 75

• 57

• 78

Plants use CO₂ in the process of _____ to make _____ and O₂

• photosynthesis, greenhouse gases

• photosynthesis, glucose

• cellular respiration, greenhouse gases

• cellular respiration, glucose

A(n) _____ is fresh (drinking) water underground

• aquifer

• aquarium

• well

• estuary

Animals use O₂ in the process of _____ to make more CO₂

• photosynthesis

• fermentation

• cellular respiration

• decomposition

Higher organisms use nitrogen to make their

• bones

• proteins

• cells

• nerves

The carbon in coal, oil, and natural gas came from

• the combustion of fossil fuels

• the remains of dead organisms

• carbon-fixing bacteria in swamp soil

• carbon dioxide dissolved in ocean water

Tags

NGSS.HS-ESS2-6

How does most of the carbon in an organism's body return to the environment after the organism dies?

• Decomposers break the body down into simpler compounds

• Heat from the sun causes the carbon in the body to evaporate

• Geological processes cause the body to turn into a fossil fuel

• Rain water dissolves the carbon in the body and carries it to the ocean.

Human processes mainly contribute to the

• release of carbon dioxide in the atmosphere

• decrease of the total amount of carbon found on Earth

• depletion of carbon dioxide reserves in the atmosphere

• increase the amount of carbon contained in rock materials.

Nitrogen fixation is the process in which certain bacteria convert nitrogen gas into

• liquid nitrogen

• nitrates

• nitrites

• ammonia

Tags

NGSS.MS-LS2-3