25.7 Global Climate & Climate Change

What is the direct cause of rising sea levels?

• Melting Sea Ice

• Melting Land Ice

• Climate Change

Floating sea ice melts...

• and causes sea levels to rise because it adds water to the ocean.

• but does not cause sea levels to rise because the ice displaces the same amount of ocean water as the melted ice would displace.

Melting land ice...

• causes sea levels to rise because it adds water to the ocean.

• does not cause sea levels to rise because the water fills the space left by the melted sea ice.

Possible human solutions for limiting global warming and climate change are...

• being more energy-efficient

• using renewable sources of energy

• removing carbon from fossil fuel emissions

• all of the above

MAIN greenhouse gas responsible for Climate Change is:

• nitrogen

• carbon

• carbon dioxide

• methane

Select the greenhouse gas(es)

• CO2

• Methane

• Oxygen

• All of the above

Which natural process removes carbon dioxide from the atmosphere?

• forest fires

• volcanic eruptions

• cellular respiration

• photosynthesis

All living things on earth are part of

• the biosphere

• the hydrosphere

• the atmosphere

• the geosphere

T/F - The amount of carbon dioxide CO2 in the atmosphere is decreasing.

• True

• False

Which human activity contributes the MOST carbon dioxide to the atmosphere?

• fishing

• farming

• breathing

• burning fossil fuels