What roles do plants and animals play in the carbon cycle?
Question 12
12.
Name one way that deforestation can add carbon dioxide to the atmosphere. (Cutting down the trees isn't adding carbon dioxide it is just stopping the carbon dioxide from being removed from the atmosphere.)
Question 13
13.
Question 14
14.
Question 15
15.
Question 16
16.
The world needs to produce 50 percent more food by 2050 to feed the increasing population. Cows are one of the main sources of food because they are used for meat and dairy items.
Question 17
17.
What greenhouse gas do cows create through their digestive process?
Question 18
18.
Explain one way that cattle production contributes negatively to the environment.
Question 19
19.
Cattle are not the only thing that adds methane to the environment. Explain another way that methane can be added to the atmosphere. I will not accept anything having to do with digestion or flatulence since that is the same way cattle add it.
In the carbon cycle, animals can release carbon back into the cycle through ___________ or through ____________.
burning....photosynthesis
respiriation.....decomposition
decomposition....photosynthesis
respiration....photosynthesis
Which of the following is an example of human impact on the carbon cycle?
The increased production of methane gases from cattle farms
The burning of fossil fuels
The cutting down of trees for lumber
None of the above
All of the above
The burning of fossil fuels releases which of the following gases into the atmosphere?
oxygen
carbon dioxide
water vapor
nitrogen
What impact can deforestation have on the carbon cycle? Select all that apply.
carbon dioxide is released into the air as trees are burned
Photosynthesis increases, thereby increasing the amount of carbon dioxide in the air.
Photosynthesis decreased, thereby increasing the amount of carbon dioxide in the air.
The amount of nitrogen-fixing bacteria increases
The use of fossil fuels is a concern because it can lead to which of the following?
global warming
eutrophication
increased runoff
polluted waters
Where is the largest carbon sink (storage) of carbon on earth located?
in freshwater
in permafrost
in the atmosphere
in the ocean
The carbon cycle works in conjunction with which of the following?
water cycle
nitrogen cycle
cycling of oxygen
all biogeochemical cycles
This is a way of describing all the carbon an individual, organization, or country puts into the atmosphere.
carbon source
carbon footprint
the Greenhouse Effect
photosynthesis
What is permafrost?
A layer of soil or rock that has been frozen for more than two years.
A layer of water that has been frozen for at least two years.
A layer of soil or rock that is frozen in the winter but not in the spring.
The uppermost layer of soil in Canada.
A consequence of permafrost melting is that methane is released into the atmosphere. What is being exposed through the thawing that is needed for bacteria to make methane?
Soil
Rivers
Organic material
Inorganic material
What role do oceans play in the carbon cycle?
They have no role
They are a major absorber (sink) of carbon dioxide
Both A & B
Neither A or B
Carbon is stored in ........
Trees and other living things
Oceans
Underground in soil and fossil fuels
All of the above
ow does the concentration of carbon dioxide in the atmosphere affect climate?
As carbon dioxide concentration increase, temperatures decrease.
As carbon dioxide concentrations increase, temperatures increase.
Carbon dioxide concentrations have no affect on climate.
As carbon dioxide concentrations increase, temperatures become more random.
Which of the following processes does NOT add carbon to the atmosphere?