Answer :
Glucose and oxygen.
By generating energy for food chains and releasing oxygen into the atmosphere, photosynthesis keeps life on Earth alive as it is today.
Around 2.4 billion years ago, the development of oxygen-producing photosynthesis made it possible for complex living forms like animals and land plants to evolve. Photosynthesis is the conversion of radiant or solar energy into chemical energy. The rate of photosynthesis has a direct impact on the productivity of agricultural crops. It gives the atmosphere the oxygen that all living things need.
Only photoautotrophs, or plants, algae, and cyanobacteria, are capable of carrying out photosynthesis. Because they are unable to manufacture their own food, heterotrophs must obtain their energy from photosynthetic organisms' production of carbohydrates.
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