The center for control of motor skills and posture is the ____.
A. cerebrum
B. medulla oblongata
C. cerebellum
D. brain stem
E. hypothalamus
Answer: C
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Which human populations have the highest levels of genetic variation?
A. European populations B. African populations C. Asian populations D. Melanesian populations E. North and South American populations
Scientists believe whales evolved from land
animals for which of the following reasons?
a. they are genetically close to a group of land animals called artiodactyls b. fossils found had a mix of whale and artiodactyl features c. some had tails but swam with their feet d. some had feet but swam with their tails e. all of these are reasons that scientists believe whales evolved from land animals
__________ contains protein-digesting enzymes and
acid. Fill in the blank(s) with the appropriate word(s).
Control of rodent populations is important for preventing ________.
A. brucellosis B. malaria C. plague D. Q fever