Energy Flow through Ecosystems Flashcard

Front

Is the atmosphere the only part of the Earth that has carbon?

Back

False

Front

Fossil fuels are formed from the decomposition of organisms that died millions of years ago.

Back

True

Front

Carbon is a chemical element with the symbol C.

Back

True

Front

The burning of fossil fuels _________ carbon dioxide in Earth's atmosphere.

Back

Increases

Front

What is released into the atmosphere when humans burn fossil fuels?

Back

Carbon Dioxide

Front

How do animals get carbon?

Back

Eating plants

Front

Nitrogen fixation is when

Back

bacteria is converted to ammonia.

Front

What happens during assimilation in the nitrogen cycle?

Back

Plants absorb nitrates from soil

Front

Nitrification is

Back

the process of converting ammonia to nitrates

Front

What percentage of earth's atmosphere is nitrogen gas?

Back

85%