Which of these substances is commonly derived from animals for medical purposes? a. morphine b. aspirin c. estrogen d. paclitaxel

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

How does a gymnosperm prevent itself from pollinating the same tree

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.