What causes the atmosphere to be unequally heated by the sun?
a. the jet stream
b. local winds
c. earths tilted axis
d. el niño

Which of the following determines the specificity of a dna probe? a. type of radiation b. level of enzymatic activity c. number of neutrons d. complementary base pairing

Some plants have reproductive structures that them reproduce using natural forces or animals. how does the reproductive structure shown here ensure the reproductive success of plants?

Select the star life cycle that is accurate