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  and   Explanation:

So Ecosystem is a natural process with natural resources and abiotic factors such as sunlight, soil, water and all nonliving things Components of the ecosystem are the abotic factors that biotic factors which are living things.

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answer; the correct answer is (beta)

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands