EXERCISES: 1. Write True or False on the line provided.
_1. Primary consumers always make up the first trophic level in a food web.
_2. Ecological pyramids show the relative amount of energy or matter contained within each trophic level in given food web.
_3. On average, about 50 percent of the energy available within one trophic level is transferred to the next trophic level.
-4. The more levels that exist between a producer and a given consumer, the larger the percentage of the original energy from
producers is available to that consumer.