Almost all living organisms use the same basic biochemical molecules. these similarities cannot be explained by descent from a common ancestor.

Consider darwin's first writings on the theory of natural selection. an important point of darwin's essay on the principle of population, written in 1798, was a peer's observation that in nature plants and animals produce far more offspring than can survive, this observation can be attributed to a) charles lyell. b) thomas malthus. c) jean-baptiste lamarck. d) johann friedrich meckel.

Stem cells found adult tissue such as in bone marrow brain muscle skin and liver are only capable of what

One drawback of dams is that they can flood land upstream from the dam and reduce water flow downstream from the dam. a. true b. false