Environmental Engineering Reference
In-Depth Information
III. The water cycle is powered by solar energy.
A.
I only
B.
II only
C.
III only
D.
I and II
E.
I, II, and III
2.
Which of the following is NOT true of food webs?
A.
Food webs are composed of multiple food chains.
B.
A food web shows the flow of energy from producers to consumers and, finally, to decomposers.
C.
In food webs, decomposers break down organic waste to return nutrients to the ecosystem.
D.
When diagramming food chains and food webs, the arrows should be drawn from the lower trophic
levels to the higher levels to show the flow of energy.
E.
As energy is moved up the food web, most of it is conserved by the species in the next trophic
levels.
3.
Secondary succession is the regrowth of a disturbed area, and primary succession is the development
from the beginning. Which of the following is primary succession?
A.
Changing soil to rock
B.
Changing ice to water
C.
Changing rock to soil
D.
Growth after a forest fire
E.
Formation of an island by volcanic action
4.
The cycle most responsible for linking biogeochemical cycles is the:
A.
Carbon cycle
B.
Hydrologic cycle
C.
Nitrogen cycle
D.
Phosphorus cycle
E.
Sulfur cycle
5.
Humans are disrupting the carbon cycle in ways that have resulted in increased levels of carbon dioxide
in our atmosphere. Which of the following human activities are most directly responsible for this in-
crease?
A.
Deforestation and the clearing of plants that absorb CO
2
through photosynthesis
B.
The addition of large amounts of CO
2
to the atmosphere by burning fossil fuels and wood
C.
The use of fertilizers and pesticides for agriculture
D.
A and B only
E.
All of the above
6.
Which of the following is NOT true regarding oxygen?
A.
O
2
is a natural occurring gas in the atmosphere.
B.
O
2
is a byproduct of photosynthesis.
C.
O
2
is a reactant in cellular respiration.
