If biological species are defined in terms of reproductive compatibility, the formation of a new species hinges on .A) gene flowB) reproductive isolationC) hybrid formationD) gene pool expansion

Most of the fossils found in virginia are in the coastal plain, valley, ridge, and appalachian plateau regions, best suggesting that these geographic provinces a) were once covered by seawater. b) are the oldest parts of virginia. c) have a great deal of karst topography. d) have large amounts of sedimentary rock.

Akrabby blind whale has married pearl who has normal vision. oneof their two sons is also colorblind. what arr the genotypes of the parents?

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics?