In terms of brain size and overall intelligence, which of these best describes hominid evolution over the last few million years?
a) brain size and intelligence have increased
b) brain size and intelligence have decreased
c) brain size has decreased and intelligence increased
d) brain size has increased while intelligence has decreased

In which of the following ways is the function of the surface of a microsphere similar to the function of an actual cell membrane? a.both make it possible for the conditions in the interior to be different from the conditions outside. b.both provide a barrier that keeps water from flowing across it so the interior remains dry. c.both separate the rna that forms in the interior from any rna that might form in the environment. d.both can actively move molecules into the interior or out into the surrounding environment.

Witch type of microscope is used to view very small cell components like proteins and dna?

Environmental differences within ecosystems are generally caused by