How long can rats stay submerged underwater?

A) 30-45 seconds
B) 60-90 seconds
C) 90-120 seconds
D) 120-180 seconds


D

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Plants have been developed that are resistant to

What will be an ideal response?

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Much medical progress can be attributed to the research rabbit

Indicate whether the statement is true or false.

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An oil marked as SAE 50 is _________ than an oil marked SAE 30

A. thinner B. thicker C. weighs 20% less D. weighs 20% more

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In a silo, ________ that forms from fermenting green material can be deadly.

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

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