5. which is not one of darwin's four main ideas of natural selection?

a. organisms produce more offspring than can survive.
b. evolution always improves organisms.
c. there is differential reproduction among better-adapted organisms.
d. individuals in a population vary in many traits.

Zoo geographic regions are characterized by the presence of specific groups of animals these regions are determined by the taxonomic or phylogenetic relationships of animals. the map shows the zoogeographic regions proposed by the naturalist alfred russel wallace in 1876. the similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between the organisms in both locations ?

What should be the strand of complementary dna produced by the strand of dna shown below cgt ata

Which of these outcomes is a negative impact of postindustrial societies on the environment? a. nomadic ways b. overpopulation c. overgrazing d. resource renewal