Biogeochemical Cycles:
By the process of ……..producers use sunlight to take carbon.
a) respiration
b) photosynthesis
c) combustion
d) none of these
Earth’s atmosphere contains……..% CO2.
a) 0.01
b) 0.04
c) 21
d) 78
By the process of photosynthesis producers use sunlight to take carbon from environment and make it a part of ……
a) fatty acid
b) stomata
c) glucose
d) none of these
Producers convert glucose to other carbohydrates by the process………………….
a) photosynthesis
b) combustion
c) metabolic process
d) none of these
Consumers obtain carbon from……………….
a) animals
b) plants
c) birds
d) insects
