An autotroph is an organism that can produce its own food using light, water, carbon dioxide, or other chemicals. Because autotrophs produce their own food, they are sometimes called producers. Plants are the most familiar type of autotroph, but there are many different kinds of autotrophic organisms.
Answer:
It's electron structure.
Explanation: The valence levels and the amount of electrons allows for the covalent bonding with multiple other elements.
In short, photosynthesis uses energy from the sun to transform carbon dioxide from air to oxygen.
Photosynthesis uses energy from the sun to transform carbon dioxide and water to form glucose and oxygen
Here's the equation:
6CO2 + 6H20 -> C6H12O6 + 6O2
Hopes this helps!