deep ocean
Is the deep ocean a place where we can store carbon indefinintely?
no
plants and forests serve as
carbon sources and carbon sinks
Soil serves as a
carbon source
A carbon source is
something that gives off carbon
What percent of the atmosphere is carbon dioxide
.04%
The deep ocean gets its carbon from ?
The surface ocean and marine biota
The process by which plants give off CO2 is called
respiration
erosion and weathering of rocks
release CO2
a carbon sink is ______________
Something that stores carbon
Where are we likely to see carbon buildup in the atmosphere first?
at the poles
The deep ocean accounts for more than _______
of the earth's carbon
65%
How is carbon from forests released into the atmosphere?
Burning wood or clearing forests
Soils store about____ of the earth's total CO2
3%
The most dynamic reservior in the carbon cycle is ________
Marine Biota
What percent of the atmosphere was carbon dioxide before the start of the industiral revolution?
.028%
Carbon dioxide that enters the deep ocean is removed from the carbon cycle for __________ of years
hundreds
Detrius is ?
Dead palnts and animals deteriorating in the soil
currently US farmland is responsible for storing ______ metric tons of carbon
20 Million
What takes up CO2 from the atmosphere
soil, oceans, palants
where on the globe does cold dense water sinks to the ocean floor and fill ocean basins
At the poles
The Surface ocean absorbs approximately _____ GtC per year . (GtC= Gigitons of carbon)
90
Forests cover about ______ amount of the surface of the earth.
1/3
if the US would increase the carbon storage in farmlands tenfold in the next 40 years, the total uptake of carbon would be _________
12%
What kind of sea animals are hurt by increased CO2 levels?
all
CO2 atmospheric concentrations increased by ____ppm (parts per million) in 2004
1.5