The Cycles of Matter Answers

0 verified answers1 views
1
Free Preview

What process adds carbon dioxide to the air?

A
nitrogen cycle
B
water cycle
C
respiration
D
photosynthesis
2
Free Preview

Why are bacteria a necessary part of the nitrogen cycle?

A
Other living things cannot use atmospheric nitrogen.
B
Other living things cannot use the nitrogen in plants.
C
Bacteria are the main nitrogen reservoir.
D
Bacteria are the main nitrogen transpirators.
3

Which of these nutrients can be found in all organic compounds?

A
nitrogen
B
calcium
C
carbon
D
phosphorous
4

Which of the following would be a result of eutrophication of a lake?

A
undergrowth of water plants
B
hypoxia, or low levels of oxygen
C
decreased decomposition
D
inactivity of fertilizers
5

Which process allows water to enter the atmosphere?

A
evaporation
B
condensation
C
precipitation
D
freezing
6

The phosphorus cycle differs from the biogeochemical cycles in that

A
it does not have an atmospheric reservoir.
B
it does not have an oceanic reservoir.
C
there is no assimilation of phosphorus.
D
there is no decomposition of phosphorus.
7

Which process plays an important role in the biogeochemical cycles of carbon, nitrogen, and phosphorus?

A
photosynthesis
B
transpiration
C
decomposition
D
respiration
8

Which statement best describes a human influence on the biogeochemical cycles?

A
increased eutrophication caused by high levels of nitrogen and phosphorous
B
increased nitrates available due to inaccurate methods of denitrification
C
increased global warming due to alternative energy sources
D
increased amount of water that is available to freshwater ecosystems
9

Osteoporosis is a disease that affects the bones and leads to an increase in bone fractures. Osteoporosis is most likely to be affected by which cycle?

A
water
B
phosphorus
C
nitrogen
D
magnesium
10

What is the effect of the biogeochemical cycles?

A
cycling energy through a food chain
B
recycling matter through the biosphere
C
recycling rocks through the layers of Earth
D
cycling nutrients through the human body

Did you find these answers helpful?