D. It performs all functions for the organism.
This is the correct answer! Hope that helps!
Answer:Both plants and animals reproduce sexually, producing a male and female gamete, which fuse to form a zygote. However, plants are also able to reproduce asexually, unlike most animals. ... In sexual reproduction in animals, the two gametes are the spermatozoa and the oocyte, which when fused become the ovum.
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Their skeletal structure and possibly how they look but usually not. You can also look at the way they live and the biomes they live in.
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not enough clean oxygen being produced for us to breathe, loss of habitat for countless species causing them to possibly go extinct.
