1. (a) Examples of primary produceres. (b) How do they get their energy?
2. (a) The second trophic level is made up of what creatures. (b) How do they get their energy?
3. Why do predators make up the third trophic level?
ANSWERS
1. (a) plants, algae, and some bacteria. (b) use solar energy to produce organic plant material through photosythesis.
2. (a) Herbivores (plant eaters). (b) get energy through photosynthesis.
3. because they eat second trophyic level animals and other small predators.
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