Cycles of Matter

__________ is the ability of the biosphere to maintain balance indefinitely.

• biogeochemical cycle

• biodiversity

• sustainability

Water vapor cools down in the atmosphere in a process called ______.

• evaporation

• transpiration

• condensation

Give one thing that happens to the water that falls back to the earth through rain or snow.

Humans get their nitrogen from

• nitrogen in the atmosphere.

• good bacteria in their intestines.

• eating plants or animals.

This is the conversion of inorganic nitrogen into organic nitrogen.

Plants use __________ and produce oxygen for other living things.

• carbon

• carbon dioxide

• carbon-oxygen

During a ___________, the inorganic nitrogen is converted by nitrogen-fixing bacteria into organic nitrogen.

Biogeochemical processes include only the biotic factors in the biosphere.

• True

• False

Carbon in the atmosphere is produced only by volcanic eruption, combustion of fuel, animals and humans.

• True

• False

This is the pathway of matter in the biosphere and geosphere in a chemical level.