Question

1. each step in the transfer of energy through a food chain or food web in an ecosystem. a trophic level b tertiary level c primary level d climax level 5. an organism that makes its own food. a decomposer b primary consumer c secondary consumer d producer 6. nutrients move through an ecosystem in which of the following ways? a electromagnetic cycles b processes that allow them to be continually renewed c pyramid cycles d ecological pyramids

Explanation:

• Question 4: In an ecosystem, each step in the transfer of energy through a food chain or food web is called a trophic level. Tertiary level refers to a specific type of consumer (third - level consumer), primary level is too general without the context of energy transfer in the food chain/web sense, and climax level is related to ecological succession (a stable community stage) not energy transfer steps.
• Question 5: An organism that makes its own food is a producer. Decomposers break down dead organic matter, primary consumers eat producers, and secondary consumers eat primary consumers.
• Question 6: Nutrients move through an ecosystem in processes that allow them to be continually renewed (biogeochemical cycles). Electromagnetic cycles are not related to nutrient movement in ecosystems. Pyramid cycles is not a standard term for nutrient movement. Ecological pyramids represent the number, biomass, or energy at different trophic levels, not the way nutrients move.

Answer:

1. A. trophic level
2. D. producer
3. B. Processes that allow them to be continually renewed