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Terms in this set (23)
how does carbon exist in the atmosphere
Carbon is attached to CO2 with the help of the sun and photosynthesis CO2 is pulled out from the air to make plant food from carbon
How are fossil fuels created?
when plants and animals die they will decay and bring carbon to the ground after a long time will become fossil fuels
Describe two ways that carbon enters the atmosphere.
when humans use fossil fuels most carbon enters as CO2 gas rest becomes dissolved in seawater
How are the oceans involved in the carbon cycle?
the oceans soak up the carbon from the atmosphere
How is the temperature of the Earth partly controlled by carbon?
CO2 is a greenhouse gas that traps the heat in the atmosphere
What role do rocks have within the carbon cycle?
Weathering of rocks on land can add carbon to the surface which eventually run of to the ocean
How much of the atmosphere is made of carbon dioxide (CO2)?
By how much has CO2 increased in the atmosphere during the past 150 years?
What does carbon cycle start with
4th most abundant element on the earth
essential for all life
movement of carbon between biosphere, oceans, geosphere
the same carbon atoms are used repeatedly on the earth and the carbon cycle never ends
how doe carbon move
burning of fossil fuels
plants move carbon through photosynthesis
animals move carbon through cellular respiration
autotrophs take in CO2 water and sunlight to produce sugars and oxygen
controls the amount of CO2
6CO2 + 6H2O + light energy = c6h12O6 + 6O2
carbon dioxide goes back to the atmosphere by breaking down sugar
cellular respiration formula
c6h12o6 + 6o2 = 6co2 + 6h2o
when plants and animals die
their bodies are decomposed and carbon atoms are returned to the atmosphere
some are not fully decomposed and return back to the underground
carbon in the ocean
additional carbon is stored in the ocean
many animals pull the carbon to use in shells
animals die and their carbon substance is stored at the bottom of the ocean
what is the main source of energy
what contains largest amount of carbon
release of carbon dioxide
co2 is released into the atmosphere by decaying dead matter volcanoes forest fires and burning o fossil fuels
the greatest human impact on the carbon cycle is the burning of fossil fuels
the vast amount of burning fossil fuels contribute to the greenhouse effect and result in climate change
green house effect
process in which co2 and other gases absorb infrared radiation from the sun forming a heat blanket around the earth
an average increase in earths temperature turn causes changes in earths climate
what does global warming lead to
change in rainfall patterns
a rise in sea level
a wide range of impact on wildlife plants and humans
believed that humans caused climate change
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