Carbon, Nitrogen, & Phosphorous Cycles

Front

When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.

Back

Atmosphere

Front

How do living organisms return carbon to the atmosphere in the carbon cycle? Options: respiration and photosynthesis, decomposition and respiration

Back

decomposition and respiration

Front

In the carbon cycle, producers take in the gas __

Back

carbon dioxide

Front

In what process is Carbon transformed into chemical energy? Options: Photosynthesis, Respiration, Primary Production, Secondary Production

Back

Photosynthesis

Front

What is happening at 1?

Back

respiration: releasing CO2

Front

What is the role of decomposers in an Ecosystem?

Back

They recycle matter and nutrients to form fossil fuels.

Front

Using fossil fuels is safe for the environment.

Back

False

Front

Organisms that need nitrogen to survive

Back

all living organisms

Front

Organisms that play a role in the nitrogen cycle: only plants, only animals, only bacteria, plants, animals, & bacteria

Back

plants, animals, & bacteria

Front

Plants and animals need nitrogen to make __________.

Back

Protein