3. What can happen to fishes when there is not enough oxygen in the water?
A. They can suffocate
B. They can no longer float in the water C. They will grow really big
D. Nothing
4. Which is true about clean water?
A. 50% of Earth's water is fresh water
B. Many people on earth have access to clean water
C. Many people on earth do not have access to clean water
D. 10% of Earth's water is fresh water 5. What type of water pollution is produced by farm animals?
A. Sewage
B. Animal waste
C. Pesticides and herbicides
D. None of the above
6. What type of pollution is produced from chemicals used to kill bugs and weeds?
A. Sewage
B. Animal waste
C. Pesticides and herbicides
D. None of the above
7. How can you help prevent water pollution?
A. Do not use weed killer in the yard
B. Scrape plates clean
C. Use less clean water
D. All of the above
8. Around how much of the Earth's water is fresh water?
A. 1%
B.5%
C. 10%
D. 20%
9. True or False: Although water pollution is bad, it does not actually cause anyone to die
A. True
B. False
C. Maybe
D. Not sure
10. Which is not an effect of water pollution on the environment?
A. It affects the oxygen in the water
B. It affects the food chain
C. It can destroy marine habitats
D. All of the above​