This happens through the food chain. Herbivores eat the plants and carnivores eat the herbivores. If plants did not use photosynthesis,they would die from lack of energy and the other organisms would suffer as well.
Don't Panic
Avoid injury
Salvage all you can
Obtain a source of water
Build a shelter
Find food
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Answer:
A tertiary consumer is an animal that obtains its nutrition by eating primary consumers and secondary consumers. Usually tertiary consumers are carnivorous predators, although they may also be omnivores, which are animals that feed on both meat and plant material.
Answer:
Because of the natural selection
Explanation:
Variation in nature is all we can found out there. Through millions of years nature went with the survival of the fittests, like Darwin said.
When we talk about artificial selection, we talk about humans getting involve on that selection, but we deppend on variation in nature. We can't "create" a new species, but we do can choose the genetic traits we want to prosper and which no.