Organisms take in oxygen and glucose and, during a chemical reaction, convert it into oxygen and water to release energy. What is this called?

Bacteria and _____________ are both examples of decomposers

Cows eating grass and humans using petrol in their cars are both examples of what?

Over millions of years dead organic matter gets compressed to form fossil fuels. Which one below is not an example of a fossil fuel

_____________ is an essential element of all living creatures.

Bacterias that decompose dead plants release _____________ back into the atmosphere.

When humans burn fossil fuels, most of the carbon quickly enters the as carbon dioxide.

Which one of these does not add CO2 to the atmosphere?

Combustion is another word for _______________.

What does not produce carbon dioxide?

Organisms that do not decompose can be buried and become what?

Where can you find carbon?