Biogeochemical Cycles

Which of the following is an example of a fossil fuel?

• Coal

• Solar Energy

• Hydroelectric Power

• Nuclear Power

The burning of fossil fuels is known as...

• Decomposition

• Photosynthesis

• Combustion

• Respiration

In order to be considered organic, a compound must contain...

• Hydrogen

• Carbon

• Nitrogen

• Phosphorus

___________ is the process by which dead matter is broken down into simpler substances by detritivores.

• Respiration

• Decomposition

• Combustion

• Photosynthesis

Animals inhale oxygen and exhale....

Which of the following will DECREASE the amount of carbon dioxide in the atmosphere?

• Combustion of fossil fuels

• Respiration

• Photosynthesis

• Decomposition

Gases that insulate the atmosphere and keep heat inside are known as

• Tollhouse gases

• Greenhouse gases

• Man-made gases

• Fossil gases

Eutrophication occurs when a body of water has too many nutrients leading to an increased population of....

• Fish

• Algae

• Legumes

• Bacteria

Decomposers convert nitrogen into ammonium ions through the process of...

• Nitrogen fixation

• Ammonification

• Nitrification

• Denitrification

Which type of organisms are responsible for turning nitrogen gas into a form useable by other organisms in the soil?

• Animals

• Plantae

• Fungi

• Bacteria