Trees give off oxygen, which living things breath. Animals also eat plants for food. And I think animal poop helps plants grow. BTW, this isn't really a math question. Hope this helps!
Answer:Plants and animals depend upon each other as mutual interdependence is must for their survival. Plants provide shelter for animals and they make oxygen for the animals to live. When animals die they decompose and become natural fertilizer plants.Plants depend on animals for nutrients, pollination and seed dispersal. Plants are also useful for animal home because many animals live around plants.
