The Cycling of Matter

Front

What is the result of burning fossil fuels?

Back

Increased atmospheric CO₂.

Front

What is the process by which carbon is cycled between the atmosphere, land, water, and organisms?

Back

Carbon cycle.

Front

What is a key component of the nitrogen cycle?

Back

Atmospheric nitrogen.

Front

What organisms are responsible for breaking down decaying matter?

Back

Decomposers.

Front

What is a sign of excessive use of fertilizers in water bodies?

Back

Algal bloom.

Front

What is the role of photosynthesis in the carbon cycle?

Back

Photosynthesis absorbs CO₂ from the atmosphere and converts it into organic matter.

Front

What is the significance of decomposers in ecosystems?

Back

Decomposers recycle nutrients back into the soil, making them available for plants.

Front

How does nitrogen fixation occur?

Back

Nitrogen fixation occurs when certain bacteria convert atmospheric nitrogen into ammonia, which can be used by plants.

Front

What is the impact of deforestation on the carbon cycle?

Back

Deforestation increases CO₂ levels in the atmosphere by reducing the number of trees that can absorb CO₂.

Front

What is an algal bloom and what causes it?

Back

An algal bloom is a rapid increase in algae in water bodies, often caused by excess nutrients from fertilizers.