Biogeochemical Cycles

Front

What is a reservoir in the context of biogeochemical cycles?

Back

A reservoir is a place where a substance is held or accumulated.

Front

What is the primary reservoir in the Nitrogen cycle?

Back

The atmosphere.

Front

How does carbon from grass enter the food chain of a lion?

Back

The carbon from grass becomes part of the lion's food chain through consumption.

Front

How do plants obtain the nitrogen they need for growth?

Back

Plants obtain nitrogen from the soil or water in which they live.

Front

What is the Nitrogen cycle?

Back

The Nitrogen cycle is the process by which nitrogen is converted between its various chemical forms, including atmospheric nitrogen, organic nitrogen, and inorganic nitrogen.

Front

What role do decomposers play in biogeochemical cycles?

Back

Decomposers break down dead organic matter, returning nutrients to the soil and making them available for plants.

Front

What is the significance of the carbon cycle in ecosystems?

Back

The carbon cycle is crucial for regulating Earth's climate and supporting life by cycling carbon through the atmosphere, biosphere, and geosphere.

Front

What process do plants use to convert atmospheric carbon dioxide into organic compounds?

Back

Photosynthesis.

Front

What is denitrification in the Nitrogen cycle?

Back

Denitrification is the process by which bacteria convert nitrates in the soil back into nitrogen gas, releasing it into the atmosphere.

Front

How does human activity impact the Nitrogen cycle?

Back

Human activities, such as the use of fertilizers, can increase nitrogen levels in the environment, leading to issues like water pollution and algal blooms.