The Carbon & Nitrogen Cycles

Front

Organisms that break down dead plants & animals and release nitrogen back into the atmosphere are ____________.

Back

bacteria

Front

All carbon in an ecosystem is continually recycled through the carbon cycle.

Back

True

Front

Plants and animals cannot use nitrogen directly from the air.

Back

True

Front

Nitrification happens in the ______.

Back

Soil

Front

Which one of these DOES NOT add CO₂ to the atmosphere?

Back

planting trees

Front

What is the carbon cycle?

Back

The carbon cycle is the process by which carbon is exchanged among the atmosphere, land, water, and living organisms.

Front

What role do plants play in the carbon cycle?

Back

Plants absorb CO₂ during photosynthesis, converting it into organic matter.

Front

What is nitrogen fixation?

Back

Nitrogen fixation is the process of converting nitrogen gas from the atmosphere into ammonia or related compounds in soil.

Front

What are decomposers?

Back

Decomposers are organisms, like bacteria and fungi, that break down dead organic material, returning nutrients to the soil.

Front

How do humans impact the carbon cycle?

Back

Humans impact the carbon cycle primarily through the burning of fossil fuels, which releases CO₂ into the atmosphere.