Today we are living in one of the ____ periods of Earth’s history, but global climate change is occurring much ____

than ever before.



a. cooler; faster
b. cooler; slower
c. warmer; faster
d. warmer; slower
e. warmer; more unpredictably


ANSWER: a

Biology & Microbiology

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Indicate whether the statement is true or false.

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a. tricuspid valve b. bicuspid valve c. pulmonary valve d. aortic valve e. left AV valve

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Fill in the blank(s) with correct word

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What will be an ideal response?

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