Compare chicken, frog, and mammalian ova as to size and the amount of yolk present.
Ova Size Amount of Yolk
Chicken
Frog
Mammalian
Ova Size Amount of Yolk
Chicken 3cm large
Frog 2mm moderate
Mammalian 0.2mm little
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A. Only chemical B. Only mechanical C. Both mechanical and chemical D. Neither mechanical nor chemical
Evolution is genetic change in ____ that occurs over time
a. an individual b. a population c. a community d. an ecosystem e. the biosphere
In the evolution of humans,
A. fossils of extinct prehumans are only found in Africa. B. one theory suggests that there were two or more migrations of human or human-like ancestors from Africa to Europe and Asia. C. the earliest fossils of human ancestors are all found in Africa. D. All of these answers are correct.
If a person sits on a cool floor, heat from that person is transferred to the floor. This is an example of
A) convection. B) radiation. C) conduction. D) evaporation.