When microbes are devouring one section of a plant, cells can self-destruct to: Attract natural predators
Tell other surrounding plants that they are attacked
Decrease the photosynthesis activity
Restrict the spread of the microbes

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air

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.

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above