__1. Which of the following causes water pollution?
a. Burning garbage b. dumping car
c. Oil spills in oceans d. both b and c

__2. There are instances where in fog combines with smoke from vehicles. What is this called?
a. Acid rain b. Green house effect
c. Smog d. Fumes

__3. How do we keep our water source clean?
a. Throw chemicals in the river.
b. Wash clothes in the rivers.
c. Throw dead animals in the sea.
d. Do not pour harmful chemicals into drain and toilets.

__4. The following are ways of keeping our air clean except one
a. Using organic insecticides sprays
b. Avoid smoking
c. Bring your car for an emission test
d. Burt tires to drive away mosquitoes

__5. Which law protects our country's body of water from contamination?
a. Republic Act 9275 b. Republic Act 9523
c. Republic Act 8449 c. Republic Act 7610