Suppose there are 500 units of energy available at the base of a pyramid of energy. How many units of that energy will the first-level consumers store? How many units will the second-level consumers store?

With every other lever 10% of the energy with be transferred. In this case:  Primary Producers (500) 1) First- level consumer. (50)  2) Second-level consumer. (5) 3) Third- level consumer. (0.5) Remember the formula is:(Primary Producer) __units X 10%= __500 units X 10%= 50

50 units of energy will be the first level consumers stored.  

5 units of energy will be the second level consumers stored.

Step-by-step explanation:

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.