Biologists have very specific terminology (that\'s one of the things that makes Biology a difficult science to learn--it\'s a foreign language). The fact that we have two different terms--(1) evolution and (2) natural selection--implies that these two terms mean different things. What is the definition of evolution (according to biologists)? What is the definition of natural selection? How are these two concepts related to one another? 100 words or more please Solution Definition : -.