b. period. d. eon. 13. What type of isolation occurs when the timing of 1. Fossils that consist of reproduction is different minerals that have filled in between two populations? an open mold of an a. geographic organism are called b. temporal a. permineralized. c. behavioral b. natural casts. d. selective c. preserved remains. 14. Coevolution is a process in d. fossils. which species 2. Which of the following a. evolve similar characteristics must a good characteristics in index fossil have? different habitats. a. very rare, easy to b. become increasingly identify, existed for a different from each brief time, occurs in a c. become extinct and are local area lost permanently. b. somewhat rare, hard to d. evolve in response to identify, existed for a changes in each brief time, widespread 15. Two species that are closely c. common, hard to related become increasingly identify, existed for a different through long time, widespread a. divergent evolution. d. very common, easy to b. disruptive selection. identify, existed for a c. convergent isolation. brief time, widespread d. competitive relationships. 3. The smallest unit of geologic time is a(n) a. epoch. c. era.
1. Fossils that consist of minerals that have filled in an open mold of an organism are called a. permineralized. b. natural casts. c. preserved remains. d. fossils. 2. Which of the following characteristics must a good index fossil have? a. very rare, easy to identify, existed for a brief time, occurs in a local area b. somewhat rare, hard to identify, existed for a brief time, widespread c. common, hard to identify, existed for a long time, widespread d. very common, easy to identify, existed for a brief time, widespread 3. The smallest unit of geologic time is a(n) a. epoch. c. era. b. period. d. eon. 13. What type of isolation occurs when the timing of reproduction is different between two populations? a. geographic b. temporal c. behavioral d. selective 14. Coevolution is a process in which species a. evolve similar characteristics in different habitats. b. become increasingly different from each c. become extinct and are lost permanently. d. evolve in response to changes in each 15. Two species that are closely related become increasingly different through a. divergent evolution. b. disruptive selection. c. convergent isolation. d. competitive relationships.
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