1. As water from a river goes toward the ocean, which statement about the
amount of pollution in the water is true?
as a river approaches the ocean, the velocity of the water decreases
as a river approaches the ocean, the amount of pollution decreases
the further away a river is from its source the less polluted it is
the further away a river is from its source the more polluted it is
2. As Earth's human population is growing exponentially, the amount of pollution
decreasing as technology is improving
staying about the same, because civilized developed countries are protecting
the world's environment
increasing an an alarming rate
none of the above
3. Acid rain in New England has approximately pH values between 4.0 to 4.5.
Below the pH level of 4.5: all fish, frogs and insects die. What two air
pollutants are most responsible for acid rain?
ozone and oxygen
sulfur dioxide and nitric oxide
iron oxide and copper oxide
lead oxides and PCB's
4.Which human process adds the most amount of carbon dioxide and pollutants
into Earth's atmosphere?
cars and trucks
burning coal to produce electricity
burning natural gas to produce electricity
5. Where is the best location to remove pollutants that would harm our environment?
at the source