NO LINKS Analyze the characteristics of objects in our solar system that allow life to exist such as the proximity of the sun, presences of water, and composition of atmosphere.

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

The pelican's beak is adapted for in .

Under which of the following circumstances would natural selection not operate on an organism