The tilt of the earth on its axis causes places near the
a. poles to receive more direct sunlight
b. equator to receive more direct sunlight
c. poles to have a warm climate
d. equator to have a cold climate

Liquid water turns into water vapor at which step in the water cycle

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

Suppose you are provided with an actively dividing culture of e. coli bacteria to which radioactive thymine has been added. what would happen if a cell replicates once in the presence of this radioactive base?