Which statement is best supported by fossil records? (a) Many organisms that lived in the past a...

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Which statement is best supported by fossil records?
(a) Many organisms that lived in the past are now extinct.
(b) Species occupying the same habitat have identical environmental needs.
(c) The struggle for existence between organisms results in changes in populations.
(d) Structures such as leg bones and wing bones can originate from the same type of tissue found in embryos.
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