Describe the evidence charles darwin gathered that led to his theory of evolution

Which system revise and send electrical signals throughout the body

Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist

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.