Energy in Ecosystems Set 1

Front

What is nitrogen fixation?

Back

The process by which bacteria convert nitrogen gas from the atmosphere into ammonia or related compounds that plants can use.

Front

What process contributes carbon dioxide to the atmosphere?

Back

Respiration is the process by which organisms convert glucose and oxygen into energy, releasing carbon dioxide as a byproduct.

Front

What is a primary consumer in a food web?

Back

A primary consumer is an organism that eats producers (plants) to obtain energy.

Front

What happens when humans burn fossil fuels?

Back

Burning fossil fuels releases carbon dioxide into the atmosphere, contributing to climate change.

Front

What is the largest group of organisms in a food web?

Back

Producers are the largest group in a food web, as they create energy through photosynthesis.

Front

Define producers in an ecosystem.

Back

Producers are organisms, like plants, that produce their own food through photosynthesis.

Front

What role do decomposers play in an ecosystem?

Back

Decomposers break down dead organic matter, recycling nutrients back into the soil.

Front

What is the difference between respiration and photosynthesis?

Back

Respiration is the process of breaking down glucose for energy, while photosynthesis is the process of converting sunlight into chemical energy.

Front

What is the biosphere?

Back

The biosphere is the global sum of all ecosystems, where life exists on Earth.

Front

What is the atmosphere?

Back

The atmosphere is the layer of gases surrounding the Earth, essential for life.