Question

Select the correct answer.

What is the process of converting inorganic substances to nutritional organic substances through I
A.
photosynthesis
volcanic activity
C.
litterfall
D.
flux
E.
burning of fossil fuel
​

Answer 1

substance in presence of light by autotrophs is known as photosynthesis

Autotrophs : the organism which can synthesize their own food

The inorganic substanc used by autotrophs is CO2 and water

This CO2 and water is converted to glucose in presence of light or chemical energy.

The reaction is

6CO2 + 6H2O ---> C6H12O6 + 6O2

Thus in the process O2 is released as by product