The Carbon Cycle

Carbon is a:

• Baby

• Molecule

• Cell

• Atom

Humans breathe in _______ and exhale _______.

• oxygen; CO₂

• CO₂; oxygen

• oxygen; oxygen

• oxygen; carbon monoxide

Burning fossil fuels creates energy because:

• Of electromagnetism

• The stored energy in the carbon-based fossil fuel is converted from sunlight through photosynthesis

• The potential energy of all the pressure put into the fossil fuels is being released

• Oil has super powers

The process of plants turning sunlight and carbon into sucrose and glucose is called:

• Carbohydrates

• Decomposition

• Deforestation

• Photosynthesis

When is most of the carbon dioxide that is exhaled from plants formed?

• respiration

• circulation

• photosynthesis

• when it starts the carbon cycle

Combustion is another word for

• burning

• melting

• exploding

• incinerating 

Deforestation contributes to the greenhouse gasses by

• increasing the amount of oxygen in the air

• loss of trees that would otherwise remove carbon dioxide from the air

• as trees are cut, they release carbon dioxide

• add carbon to the atmosphere

Carbon is stored in

• underground in soil and fossil fuels

• trees and other living things

• oceans

• all are correct

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

• Plant food

• Toxic waste

• Decomposition

• Fossil fuels

What is NOT a Fossil Fuel?

• Gas

• Coal

• Electricity

• Oil