False.
The semilunar valves are the pulmomic and aortic values.
the mitral and tricuspid valves prevent back flow of blood into the atria.
Individuals of a population can be distributed in one of three basic patterns: they can be more or less equally spaced apart (uniform dispersion), dispersed randomly with no predictable pattern (random dispersion), or clustered in groups (clumped dispersion).
+/+ = mutualism
+/0 = commensalism
+/- = parasitism or predation
There are 137 prairie dogs living on the football field at the school. The football field's area is 7140 m2. In the football field, how many prairie dogs are there?
B.) Decreases (As the growth rate of a population increases, the doubling time decreases.)
