The leeward side of a mountain is often
a)cold
b)hot
c)wet
d)dry

Why do you think the puppy litter was all dark-haired?

Which is not a type of symmetry? a. asymmetryb. radial symmetryc. bilateral symmetryd. lateral symmetry

Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins