8. Materials essential for development are transported to a human fetus through the: A. Fallopian tubes
B. Egg cell
C. Reproductive hormones
D. Placenta

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.

The third stage of cellular respiration is (2 points)

What determines whether a particular cell is able to respond to a hormone?