The Clean Air Act became law in

A. 1985.
B. 1970.
C. 1980.
D. 1990.


Answer: D

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The recommended daytime temperature range for indoor plants is _____

A) 60-70°F B) 55-80°F C) 60-85°F D) 50-85°F

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The ___________________ process was first discovered in the year 1839.

Fill in the blank(s) with the appropriate word(s).

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When the egg, called a(n) ____________________, is fertilized, it becomes a zygote with the complete genetic code intact

Fill in the blank(s) with correct word

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The function of an atrium is to

A) collect blood returning to the heart. B) pump blood to the lungs. C) pump blood into the systemic circuit. D) prevent the movement of blood back into the ventricles. E) stabilize the position of the heart valves.

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