Determine whether the following statements about sympatric speciation are true or false. a. Sympatric speciation only occurs in
areas where there is local variation in environmental resources. b. A dam dividing a fish population could lead to sympatric speciation. c. Specialization on different plant hosts for members of an insect population can lead to sympatric speciation.
The oldest of the zircons in the study, which came from the Jack Hills of Western Australia, were around 4.3 billion years old—which means these nearly indestructible minerals formed when the Earth itself was in its infancy, only roughly 200 million years old.
