Match the terms to its description.
1.atmosphere
2.hydrocarbons
3.sink
4.shells
5.ocean and lakes
a. contains(s)dissolved carbon
b. another term for fossil fuels
c. storage location(s)for carbon
d. contains(s)carbon dioxide in the form of gas
e. contains(s)carbon in the from of calcium carbonate

 1. - Fuels created from the remains of dead organisms.

2. -  The number of organisms living in a particular area.

3. -  Water falling from the atmosphere as a liquid or solid. (rain, snow, hail, or ice pellets)

4. -  An organism that can make its own food.

5. -  A close relationship between organisms of different species.

6. -  Area of land that drains water to a common location.

i am going to guess that it is co2.