1.the carbon cycle is
a. the first step in photosynthesis
b. the second step is photosynthesis
c. a process that takes place during cellular respiration
d. the means by which carbon is recycled in the biosphere
2.all living things
a. breath in some way
b. contain some form of carbon
c. are involved in the carbon cycle
d. all of the above
3. what do living things use carbon for
a. to form the proteins, lipids, nucleic acids, and carbohydrates
b. to eat
c. to excrete
d. to decompose
4. all of the energy in living organisms can be traced back to the process of
a. cellular respiration
b. photosynthesis
c. decomposition
d. excretion
5. petroleum fuels like gasoline, diesel, and jet are the products of
a. common combustibles
b. photosynthesis
c. cellular respiration
d. fossilized organisms being built up and compressed over millions of years
1. d. the means by which carbon is recycled in the biosphere
2. d. all of the above
3. a. to form the proteins, lipids, nucleic acids, and carbohydrates
4. b. photosynthesis
5. d. fossilized organisms being built up and compressed over millions of years