Which of the following leads to evolution by natural selection a. low rates of mutation b. an unlimited amount of resources c. a population that is perfectly suited for its environment d. a population that produces more offspring than can survive

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.

What should be the strand of complementary dna produced by the strand of dna shown below cgt ata

Which skeletal system is represented by the shaded portion of the skeleton? spongy skeleton compact skeleton axial skeleton appendicular skeleton