Question
ve: The MODEL tab shows a simplified model of the carbon cycle. The ovals represent carbon
roirs, where carbon is stored. The unit "GtC" stands for gigatonnes of carbon, where one GtC is
to one trillion kilograms of carbon. The arrows represent how much carbon moves from one reservoir
ther each year, in gigatonnes per year.
Look at the arrows pointing toward
atmospheric CO2. What are the two major
sources of atmospheric carbon?
A carbon sink is a location that stores
carbon for a long period of time. Which two
carbon sinks remove carbon from the
atmoschere?
Answer
The two major sources of atmospheric carbon are the burning of fossil fuels and land use changes. The two carbon sinks that remove carbon from the atmosphere are the ocean and plants.