18. the theory of evolution by natural selection was proposed by: a copemicus and galileo b. thales of mitetus c. darwin and wallace d. mendel and buffon e. lyell and hutton

The answer is Darwin and Wallace.

Explanation: Darwin had visited the galapagos and many other places and found the the idea of natural selection can eventually lead to evolution. Also it can either help and organism or harm it.

answerhydrogenous sediment;