Study Guide Multiple Choice

Air. (What are the major sources of air pollution in urban areas?)
-What are the major sources of air pollution in urban areas?
a.) Car Emission
b.) Water Runoff
c.) Factory Smog
d.) Microwave Waves

-Why are cars the main source of air pollution?
a.) There are so many of them emmitting gases
b.) Cars are everywhere
c.) They're not
d.) All of the above

Food and Agriculture. (Describe the need for soil conservation.)
-What is soil conservation?
a.) a set of managements to prevent the soil from eroding or being overused.
b.) a set of managements to prevent the soil from salinizing.
c.) a set of managements to prevent the soil from acidifying.
d.) All of the above.

-How does soil conservation help the crops being planted?
a.) It gives the crops a better color
b.) It doesn't.
c.) Conserved soil has nutrients in it that help the crops grow
d.) The crops take more nutrients from the soil, and therefore have more nutrients and vitamins in them.

Land. (Describe the environmental effects of deforestation. What is reforestation and why is it important?)
-What is deforestation?
a.) The planting of more trees
b.) Tearing down farms
c.) The destruction of ocean plants.
d.) The destruction of forests

-What is one of the main reasons for deforestation?
a.) Short term economic benefits
b.) Urban and Construction Purposes
c.) To remodel and make into farmland
d.) All of the above

-What are the effects of deforestation?
a.) Air problems: Without trees, there is no air in that area. So the farmers taking the land can't beathe for a while.
b.) Erosion of soil: When the soil is introduced to pure sun, it becomes dry and eventually infertile. Nutrients being lost, and then it rains, and carries away the last of the nutrients.
c.) Monkey displacement: All the monkeys that used to live in the trees have to live underground because the trees are gone.
d.) All of the above

-What is reforestation?
a.) The replanting of crops.
b.) The restoring of forest animals into their habitat.
c.) The return of sea forests
d.) Replanting the trees that have been cut down from deforestation

-Why is reforestation important?
a.) It helps the forest grow back into what it once was
b.) It's not important
c.) It gives the earth more air
d.) It's pretty