Body size is a heritable trait in the amphipod, and aquatic crustacean. fish preferentially consume large amphipods, leaving primarily small amphipods to breed. based on these observations, how would we expect evolution to affect ponds with and without fish?

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time

State officials are considering constructing a road through a forested wilderness area. this action will likely affect the forest ecosystem in various ways. part a: predict how the construction of a road could negatively affect plants and animals in that ecosystem. (3 points) part b: describe one way that the construction of a road could have a positive impact of the forest ecosystem. (1 point)