Climate changes cause a drought. There is no food to collect. To survive, the animals must become predators, catch and kill prey for food. Compare and contrast the traits of each group. Which group(s) would you expect to die out because of their mutations in this new environment?

Which of the following is the best definition of a eukaryota? a. a one-celled organism that does not have a membrane-bound nucleus b. a one-celled organism that does not have a cell wall c. an organism whose cells each contain a membrane-bound nucleus d. an organism whose cells each have a cell wall