Most carbon is found where?

• In the air as carbon dioxide

• In plants

• In rocks

• In fossil fuels

The burning of fossil fuels is called...?

• Combustion

• Tranpiration

• Evaporation

• Condensation

By what process do trees take carbon out of the atmosphere?

• Respiration

• Transpiration

• Combustion

• Photosynthesis

The breakdown of carbohydrates into carbon dioxide is called...?

• Photosynthesis

• Respiration

• Combustion

• Transpiration

What effect does carbon dioxide in the atmosphere have on the planet?

• It traps heat

• It blocks light

• It leads to cloud formation

• It causes heat loss

Which of the following does not contain carbon?

• Proteins

• Fats

• Carbohydrates

• Water

The loss of water from plants is called...?

• Perspiration

• Evaporation

• Photosynthesis

• Transpiration

Where is most water on the planet found ?

• In oceans

• In rivers

• In lakes

• In the atmosphere

Water falling from clouds is called...?

• Transpiration

• Perspiration

• Precipitation

• Condensation

The turning of water into a gas by heating it is called...?

• Precipitation

• Cloud formation

• Condensation

• Evaporation