Global warming

Coal, oil and gas are ___________.

• Fossil fuels
• Nuclear energy
• Renewable energy sources

Burning coal, oil and gas releases the gas __________ into the atmosphere.

• carbon dioxide (CO2)
• nitrogen dioxide (NO2)
• methane (CH4)

This increases the __________, trapping more the sun's heat.

• greenhouse effect
• global warming
• ozone layer

Increased use of fossil fuels is leading to _________.

• global warming

• conserve

• snow

We must all try to __________ energy.

• Waste
• Conserve

A gas present in air. __________

• helium
• carbon dioxide

• nitrogen

To save or take care of something. ___________

• neglect

• conserve

• destroy

The way in which gases such as carbon dioxide trap heat in the atmosphere. ___________

• Global warming effect
• Atmospheric heating
• Greenhouse effect

The increase in the average temperature of the Earth caused by increased amounts of greenhouse gases in the atmosphere. ____________

• Ozone depletion
• Global warming
• Climate change

When the fossil fuels burn, carbon dioxide is released into the atmosphere.

• False

• True