Unit 2: Pollution End of Unit Test

Which statement BEST explains why conserving trees would be helpful to the air?

• It would provide homes and shelters for animals.

• It would give people more shade during the summertime.

• It would help increase oxygen and reduce carbon dioxide.

• It would make natural building materials for people.

Which of the following statements best explains why recycling is helpful for the environment? SELECT TWO ANSWERS

• Recycling helps conserve resources.

• Recycling is free.

• Recycling means we don't have any trash.

• Recycling keeps trash out of landfills.

• Recycling creates jobs.

Where is pollution found on the earth?
 
 
  

• only in the air 
• only on the land 
• only in the water 
• on land, in the air, and in the water 

What is a renewable resource?
 
 
  

•  one that can be replaced quickly 
• one that is man-made
• one that comes from the sun 
• one that will never run out 

Which one BEST describes a nonrenewable resource?

   

• It is one that will run out one day and can’t be replaced.
• It will last for about 100 years.
•   It can be replaced again and again.
• It will never run out.

Which of the following is an effect of water pollution?

• land pollution

• storm drains

• acid rain

• animals dying

Which of these problems can be caused by air pollution?

• Respiratory problems
• Reduced food sources for humans
• Increased disease for humans
• Decrease in global temperatures

Human pollution is caused by

• solar powered homes

• electric cars

• hydroelectric electricity

• burning fossil fuels

__________ means to use something old to make something new.

• reduce
• reuse
• recycle

Global warming can lead to

• deforestation

• climate change

• oil spills

• litter