Sharing the Planet

Samuel's family wants to use a renewable resource to heat their new home. Which of the following could they use?

• oil

• gas

• coal

• sunlight

Increase in which gas is primarily responsible for increased global warming?

• Carbon dioxide
• Water vapor
• Methane
• Nitric oxides

Which type of pollution is shown in the image below?

• Air pollution

• Water pollution

• Acid precipitation

• Global warming

Which type of human impact is shown in the picture below?

• Desertification

• Deforestation

• Land pollution

Humans cause a significant amount of air pollution by burning _____ fuels?

• Organic

• Electric

• Fossil

What is the greenhouse effect?

• warming of the earth due to gases in our atmosphere.
• cooling of the earth due to gases in our atmosphere

The main human activity that releases greenhouse gases is

• using bottled water
• burning fossil fuels
• texting on cellphones
• eating meat

Paper, plastic, and glass can be recycled.

• True

• False

When you shut off the water while you are brushing your teeth, you are _____________.

• Reducing

• Reusing

• Recycling

When plastic bottles are melted to make something new out of plastic, this is ______________.

• Reducing

• Reusing

• Recycling