1. which of the following is not a characteristic that distinguishes one type of forest from another, such as siberian vs. tropical rain forest?
select one:
a. types of trees
b. age of trees
c. climate
d. precipitation

2. why is a rain drop a particularly damaging element to soil?
select one:
a. it dilutes minerals in the soil.
b. it causes the soil to break apart and carries it away.
c. it often contains contaminants that poison the soil.
d. it prevents the aeration of the soil.

3. clear cutting has a similar effect as controlled burning of a forest.
select one:
true
false

4. unlike a mineral, a rock:
select one:
a. is made up of exclusively carbon
b. is made up of multiple substances
c. is made up of inorganic compounds
d. is a natural resource

5. which of the following is not an advantage of conserving water?
a. ensuring that we have enough clean water in the future
b. keeping the costs of water down
c. making sure that areas experiencing water scarcity have better access to freshwater
d. decreasing water supply to nations that are not in compliance with the united nations