Question

1. only about 20% of the energy available at each trophic level gets passed to the next trophic level. a. true b. false 20. energy and matter flow from producer to consumer in an ecosystem. a. true b. false

Explanation:

1. In an ecosystem, the 10 - percent rule states that only about 10% of the energy available at each trophic level is passed to the next trophic level, not 20%. So the statement is false.
2. In an ecosystem, energy flows from producers to consumers in a unidirectional way and matter is cycled between producers and consumers. So the statement that energy and matter flow from producer to consumer is true.

Answer:

1. B. False
2. A. true