Dutch Elm Disease is a destructive fungal infection that kills elm trees. Some elms are more resistant to the disease than other elms. Which best explains this difference?

Which of these statements are true about scientific theories and hypothesis

Which of the following is a true statement? a. individuals evolve to have adaptations. b. individuals have adaptations that can change over time. c. individuals have traits that may or may not make them successful at reproduction. d. populations cant evolve, only individual organisms.

Which of the following is caused by reproductive isolation within a species? a. a decrease in gene flow b. an increase in genetic flow c. a decrease in genetic drift d. an increase in gene flow