The ecological efficiency at each trophic level of a particular ecosystem is 20%. if the green plants of the ecosystem capture 100 units of energy, about units of energy will be available to support herbivores, and about units of energy will be available to support carnivores.

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Name two kinds of practical electric pumps.

Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward