Net primary production is: the net energy received by plants after subtracting what is turned into plant material. only the energy received by plants that is converted into protein. the amount of material a plant accumulates as a result of photosynthesis. the total energy received by plants from sunlight. the total energy received by plants from sunlight in usable wavelengths.

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.

How are fungi more like an animal? they have a cell wall. they are heterotrophs that absorb their food. they produce seeds and have membrane-bound nucleus. they use sunlight for photosynthesis.

What are some natural processes that represent physical and chemical changes?