Question

Energy (a) and nutrients flow through ecosystems.

Answer 1

Energy Flow Through Ecosystems. Ecosystems maintain themselves by cycling energy and nutrients obtained from external sources. At the first trophic level, primary producers (plants, algae, and some bacteria) use solar energy to produce organic plant material through photosynthesis.

Answer 2

Explanation:

Energy Flow in Ecosystem. Energy moves life. The cycle of energy is based on the flow of energy through different trophic levels in an ecosystem. At the first trophic level, primary producers use solar energy to produce organic material through photosynthesis.