Directions: Fill in the blank with the correct word or phrase to
complete the discussions of the carbon and oxygen cycle.
In the process of 1 _____, atmospheric carbon is absorbed by plants.
This carbon is transferred from 2 to the 3_
feeding
on them, and further moves up the food chain. 4
and _
of plants and animals result in
some transfer of carbon back to the atmosphere. Some of these living
beings buried millions of years ago have been converted to fossil fuels.
5_
and burning of fossil fuels cause this carbon to move from
the lithosphere to the atmosphere. Some of this atmospheric carbon
gets dissolved in the oceans and thus, completes the cycle.