Q. What are the necessary conditions for autotrophic nutrition and what are its byproducts?

Autotrophic nutrition takes place through the process of photosynthesis.  The necessities for autotrophic nourishment involve carbon dioxide( CO₂), water (H₂O), chlorophyll pigment, and sunlight. The by-products of photosynthesis are oxygen (O₂) and carbohydrates ( Glucose,C₆H₁₂O₆ )