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Biology, 22.06.2019 05:30
The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.
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Biology, 22.06.2019 16:20
Fossils of ancestors of the modern horses show a small 4-toed almost dog-like browsing animal named eohippus over time the horses got larger lost toes and changed to a grazing diet what is the best explanation of why this change occurred
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Biology, 22.06.2019 22:00
Which of the following are causes of evolutionary change? 1)genetic drift 2) natural selection 3) gene flow 4)mutation
Answers: 1
Nuclear fission involves what? a. combining atoms b. splitting atoms c. alternating atoms d. consum...
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