Which phrase best summarizes the theory of evolution by natural selection? a. only the strongest animals survive. b. life must come from other life. c. populations change over long periods of time. d. parent organisms pass on traits they have acquired during their lifetime. question resources

Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants.d. selecting individuals at random.

In some plants, pointed leaves (p) are dominant over rounded leaves (p). a plant with a genotype of pp

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.