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Carbon cycle | Quizlet
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16 Multiple choice questions
Definition
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if conditions are not favorable for the process of decomposition, dead organisms decay slowly or not at all.
These organisms build up and, if compressed over millions of years, can form fossil fuels (coal, oil or gas).
Excretion
Fossilization
Respiration
Decomposition
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Discuss the effects of the combustion of fossil fuels and the cutting down of forests
Photosynthesis takes carbon dioxide out of the atmosphere and replaces it with oxygen. Respiration
and combustion take up oxygen and replace it with carbon dioxide. When fossil fuels are burnt during
combustion, the carbon in them combines with oxygen in the air and forms carbon dioxide. The burning
of fossil fuels is thought to be having an effect on the balance of carbon dioxide as the extra carbon
dioxide may be causing the percentage of it in the atmosphere to increase. Moreover, the loss of trees
may be reduce the amount of photosynthesis taking place which means that the concentration of co2
increases and that of oxygen decreases. The rise in levels of co2 levels in the atmosphere may be
dangerous as it could cause global warming.
The carbon cycle is the process in which carbon is passed from the atmosphere, as carbon dioxide, to
living things. First carbon enters the atmosphere by respiration and combustion. Producers then absorb
the carbon dioxide from the atmosphere during the process of photosynthesis to make carbohydrates.
Consumers eat the plants and the carbon from the plants becomes part of the animal's fats and proteins
and the carbon compounds are passed along the food-chain. Most carbon they consume is exhaled as
carbon dioxide during respiration. Plants and animals eventually die. These dead organisms are eaten
by decomposers and the carbon in their bodies is returned as carbon dioxide back into the atmosphere.
In some conditions, decomposition is blocked and plant and animal material turn to fossil fuels- available
for future combustion.
Combustion of fossil fuels releases carbon dioxide into the atmosphere. Plants take away carbon dioxide
from atmosphere during photosyntheses; destroying trees and other vegetation increases levels of
co2 and decreases oxygen in atmosphere as no photosynthesis takes place.
Decomposition and decay also releases carbon dioxide. It happens faster in warm, moist conditions
with plenty of oxygen and vice versa.
Definition
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Burning fossil fuels releases carbon that has been sequestered for millions of years underground- this
increases atmospheric concentrations of Co2. Destroying forests and other forms of vegetation diminishes
the ability for photosynthesis to remove carbon dioxide away from the atmosphere which also results in a
net increase and causes a long-term enlargement in atmospheric co2.
Photosynthesis in carbon cycle
hydrological cycle human impacts
nitrogen fixation human effects on
carbon cycle
Definition
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Carbon cycle | Quizlet
When complex carbon compounds in dead organisms, in urine and in feces, are broken down into simpler
carbon compounds by bacteria or fungi.
Respiration
Combustion
Excretion
Decomposition
Definition
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Feeding moves carbon in the form of biological molecules along the food-chain.
Sensing
Carrying Diseases
Feeding
Excretion
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Describe how carbon is removed
Carbon is absorbed by rocks and minerals through weathering processes over millions of years.
Plants absorb co2 from the atmosphere during photosynthesis. The carbon then
the plant's complex molecules such as proteins, fats and carbohydrates.
becomes part of
Carbon is removed from the atmosphere by volcanic eruptions, which release sulfur dioxide instead.
Carbon is eliminated from the atmosphere by artificial means such as industrial filtration systems.
Definition
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The carbon cycle is the process in which carbon is passed from the atmosphere, as carbon dioxide, to
living things. First carbon enters the atmosphere by respiration and combustion. Producers then absorb
the carbon dioxide from the atmosphere during the process of photosynthesis to make carbohydrates.
Consumers eat the plants and the carbon from the plants becomes part of the animal's fats and proteins
and the carbon compounds are passed along the food-chain. Most carbon they consume is exhaled as
carbon dioxide during respiration. Plants and animals eventually die. These dead organisms are eaten by
decomposers and the carbon in their bodies is returned as carbon dioxide back into the atmosphere. In
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Carbon cycle | Quizlet
Term
some conditions, decomposition is blocked and plant and animal material turn to fossil fuels- available for
future combustion.
Describe the carbon cycle
Describe decomposition or decay during carbon cycle
Describe how carbon is removed
Discuss the effects of the combustion of fossil fuels and the cutting down of forests
Definition
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The burning of fossil fuels releases stored carbon back into the atmosphere.
Decomposition
Combustion
Respiration
Condensation
Term
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How it is returned...
Animals eat the plants and the carbon in the plants becomes part of the animal's fats and proteins.
Microorganisms and some animals feed on animal waste and the remains of dead animals and plants.
The carbon then becomes part of these organisms.
Carbon dioxide is released into the atmosphere through respiration of plants, animals and
microorganisms. It is also released by combustion of wood and fossil fuels (oil, coal, gas). Burning of fossil
fuels is gradually increasing co2 levels in atmosphere.
if conditions are not favorable for the process of decomposition, dead organisms decay slowly or
not at all. These organisms build up and, if compressed over millions of years, can form fossil fuels (coal,
oil or gas).
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Combustion of fossil fuels releases carbon dioxide into the atmosphere. Plants take away carbon dioxide
from atmosphere during photosyntheses; destroying trees and other vegetation increases levels of
co2 and decreases oxygen in atmosphere as no photosynthesis takes place.
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How it is passed along from one organism to the next
Animals eat the plants and the carbon in the plants becomes part of the animal's fats and proteins.
Microorganisms and some animals feed on animal waste and the remains of dead animals and plants.
The carbon then becomes part of these organisms.
Plants absorb carbon dioxide from the atmosphere and form it into sugar, starch and other
biological compounds. This is the only process in the cycle that decreases the levels of carbon dioxide
in the atmosphere.
Carbon dioxide is released into the atmosphere through respiration of plants, animals and
microorganisms. It is also released by combustion of wood and fossil fuels (oil, coal, gas). Burning of fossil
fuels is gradually increasing co2 levels in atmosphere.
Combustion of fossil fuels releases carbon dioxide into the atmosphere. Plants take away carbon dioxide
from atmosphere during photosyntheses; destroying trees and other vegetation increases levels of
co2 and decreases oxygen in atmosphere as no photosynthesis takes place.
Definition
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When waste is removed from the body (urine). This excreted material may be broken down during
decomposition.
Decomposition
Excretion
Egestion
Respiration
Definition
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Plants absorb carbon dioxide from the atmosphere and form it into sugar, starch and other biological
compounds. This is the only process in the cycle that decreases the levels of carbon dioxide in the
atmosphere.
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Carbon cycle | Quizlet
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Photosynthesis in carbon cycle
Photosynthesis equation
Human effects on carbon cycle
Describe how carbon is removed
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Carbon cycle | Quizlet
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Describe decomposition or decay during carbon cycle
Decomposition occurs only in cold, dry conditions where carbon is stored in ice and not released.
Decomposition is the process where plants grow and absorb nutrients from the soil, reducing carbon
levels.
Decomposition and decay also releases carbon dioxide. It happens faster in warm, moist conditions
with plenty of oxygen and vice versa.
Decay refers to the process of fossilization where carbon is trapped in sedimentary rocks for millions
of years.
Definition
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When living organisms respire (plants, animals, microorganisms ), they release carbon dioxide back into
the atmosphere ( this is a form of excretion )
Excretion
Decomposition
Combustion
Respiration
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Factors that contribute carbon dioxide to the environment
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Carbon cycle | Quizlet
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Combustion of fossil fuels releases carbon dioxide into the atmosphere. Plants take away carbon
dioxide from atmosphere during photosyntheses; destroying trees and other vegetation increases
levels of co2 and decreases oxygen in atmosphere as no photosynthesis takes place.
Animals eat the plants and the carbon in the plants becomes part of the animal's fats and proteins.
Microorganisms and some animals feed on animal waste and the remains of dead animals and plants.
The carbon then becomes part of these organisms.
Decomposition and decay also releases carbon dioxide. It happens faster in warm, moist conditions
with plenty of oxygen and vice versa.
Carbon dioxide is released into the atmosphere through respiration of plants, animals and
microorganisms. It is also released by combustion of wood and fossil fuels (oil, coal, gas). Burning of fossil
fuels is gradually increasing co2 levels in atmosphere.
Definition
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The removal of feces from an animal that will contain carbon. This egested material may be broken down
during egestion.
Respiration
Decomposition
Egestion
Secretion
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Carbon cycle | Quizlet
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Answers
1. If conditions are not favorable for the process of decomposition, dead organisms decay slowly or
not at all. These organisms build up and, if compressed over millions of years, can form fossil fuels
(coal, oil, or gas). Answer: Fossilization
2. Discuss the effects of the combustion of fossil fuels and the cutting down of forests: Burning fossil
fuels releases stored carbon (in the form of carbon dioxide) into the atmosphere, contributing to
global warming. Cutting down forests reduces the number of trees available for photosynthesis,
which normally absorbs carbon dioxide and produces oxygen. The combination of increased
combustion and deforestation leads to higher CO2 levels and decreased oxygen in the
atmosphere.
3. When complex carbon compounds in dead organisms, in urine, and in feces, are broken down
into simpler carbon compounds by bacteria or fungi. Answer: Decomposition
4. Feeding moves carbon in the form of biological molecules along the food-chain. Answer: Feeding
5. How is carbon removed? Answer: Plants absorb CO2 from the atmosphere during
photosynthesis. The carbon then becomes part of the plant's complex molecules such as
proteins, fats, and carbohydrates.
6. The burning of fossil fuels releases stored carbon back into the atmosphere. Answer: Combustion
7. How is carbon passed along from one organism to the next? Answer: Animals eat the plants and
the carbon in the plants becomes part of the animal's fats and proteins. Microorganisms and
some animals feed on animal waste and the remains of dead animals and plants. The carbon
then becomes part of these organisms.
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8. When waste is removed from the body (urine). This excreted material may be broken down
during decomposition. Answer: Excretion
9. Decomposition and decay also release carbon dioxide. It happens faster in warm, moist
conditions with plenty of oxygen and vice versa. Answer: Decomposition and decay also release
carbon dioxide. It happens faster in warm, moist conditions with plenty of oxygen and vice
versa.
10. When living organisms respire (plants, animals, microorganisms), they release carbon dioxide
back into the atmosphere (this is a form of excretion). Answer: Respiration
11. Factors that contribute carbon dioxide to the environment: Answer:
o
Combustion of fossil fuels
o
Decomposition and decay in warm, moist conditions
o
Respiration of plants, animals, and microorganisms
12. The removal of feces from an animal that will contain carbon. This egested material may be
broken down during egestion. Answer: Egestion
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