Cycles Review -Water, Carbon, Nitrogen

Front

Where is most of the water found on Earth?

Back

Oceans

Front

How do most nutrients get back into the soil after forest plants have used them?

Back

Decomposition

Front

What part of the carbon cycle is represented by cellular respiration?

Back

Cellular respiration is the process where organisms convert glucose and oxygen into energy, releasing carbon dioxide as a byproduct.

Front

Which process does not add CO2 to the atmosphere?

Back

Planting trees helps absorb CO2 from the atmosphere.

Front

What process returns nitrogen to the atmosphere and soil after plants and animals have used it?

Back

Decomposition returns nitrogen to the soil and atmosphere.

Front

What is the water cycle?

Back

The water cycle is the continuous movement of water on, above, and below the surface of the Earth.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants use sunlight to synthesize foods with the help of chlorophyll.

Front

What role do bacteria play in the nitrogen cycle?

Back

Bacteria convert nitrogen in the atmosphere into forms that plants can use, and also decompose organic matter.

Front

What is combustion?

Back

Combustion is a chemical process in which a substance reacts with oxygen to produce heat and light, often releasing CO2.

Front

What is evaporation?

Back

Evaporation is the process by which water changes from a liquid to a gas or vapor.