Earth's dynamic processes allow our planet to recycle: a) water, rock and air b) water, rock and surface materials c) rock, air and surface materials d) air, surface materials and water

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 is the primary function of the nervous system?

Recommend a strategy for incorporating sustainable human activity into a tropical rain forest biome.