Human Activities and Climate Change

Your Name

_____________________ are water vapor, carbon dioxide, and methane, absorb the heat leaving Earth's surface.

• greenhouse gases
• fossil fuels

_________________ are energy-rich substances formed from the remains of organisms.

• greenhouse gases
• fossil fuels

The gradual increase in the temperature of Earth's atmosphere is called ________________________.

• fossil fuels
• global warming

Human activities are increasing the level of greenhouse gases in the atmosphere and producing changes in climate worldwide. This increase is causing global temperatures to rise.

• True
• False

The effects of global warming include melting glaciers, rising sea levels, drought, desertification, changes to the biosphere, and regional changes in temperature.

• True
• False