Extracts of the rosy periwinkle, Cantharus roseus, have provided medicine with vincristine and vinblastine, drugs now available for treating cancer. The ability to find this species of plant and discover these drugs is a strong argument for:

A) genetic engineering
B) overexploitation
C) preserving biodiversity
D) supporting pharmaceutical industries

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?

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.

What does this experimental investigation lack