Which of the following features assisted amphibians’ migration to land?

Which group encouraged withdrawal from politics as a key to achieving inner peace?

MULTIPLE CHOICE Instructions for this section:  Read the following questions carefully and pick the correct response.

Most modern mammals are

You’re studying bacteria that is undergoing DNA replication. When you centrifuge the DNA isolated from the bacteria, the DNA separates in the test tube into two bands. One band of DNA includes very large molecules (tens of thousands or even millions of nucleotides long), and the other includes short stretches of DNA (several hundred to a few thousand nucleotides in length). These two bands of DNA probably represent

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Which macromolecules can be broken down into intermediate products that enter cellular respiration?

Which of the following is true of metabolism in all organisms?

Thoreau refused to pay his poll tax because

The principle reason for the decision was to save money.