Why do we say photosynthesis is responsible for food production for nearly all forms of life on earth?

Photosynthesis allows autotrophs to make their own food, then in turn heterotrophs eat the autotrophs giving them food. It's like a big cycle!

Because plants are autotrophs which are consumed by heterotrophs like animals/humans. Humans are omnivores, so humans eat meat like cow or chicken and humans directly eat plants. Both plants and meat are consumed by humans and both of those have consumed or
Done photosynthesis

The main role of dna in the  cell is the long-term storage of information. it is often compared to a blueprint, since it contains the instructions to construct other components of the  cell, such as  proteins  and rna molecules.the main function of rna is to carry information of amino acid sequence from the genes to where  proteins  are assembled on  ribosomes  in the  cytoplasm. mark brainliest, my work is good.

Because some people pollute water ans waste it