Edward Jenner injected individuals with ____ lesions to protect them from ____

a. chickenpox; smallpox
b. smallpox; chickenpox
c. smallpox; cowpox
d. cowpox; smallpox
e. cowpox; chickenpox


D

Biology & Microbiology

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Euglenids have functional eyespots that can discern all colors of visible light and the movement of predators

Indicate whether the statement is true or false

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The site of exchange of materials between the blood and the body tissues is the ______.

a) arterioles b) veins c) arteries d) capillaries e) venules

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Bioremediation is the use of microbes

a) to clean up pollutants and toxic wastes. b) in recycling vital elements. c) to treat sewage. d) in food production.

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