Which of the following regions experiences its greatest solar intensity in late december?
a. buenos aires, argentina
b. madrid, spain
c. paris, france
d. toronto, canada
e. washington, d. c.

Put the following steps of the convection process in the correct order. 1. gravity pulls cooler matter downward. 2. the matter expands and decreases in density. 3. an up-and-down flow of matter produces a convection current. 4. matter is heated. 5. warmed matter is forced upward. question 2 options: a) 4, 2, 5, 1, 3 b) 2, 4, 3, 1, 5 c) 3, 2, 5, 4, 1 d) 1, 4, 2, 5, 3

What enzyme is most important for dna replication and why?

People with one sickle cell allele are not likely to get malaria. what is this an example of?