Question

Define the first and third trophic level of an ecosystem.
With explanation.​

Answer 1

Explanation:

The first and lowest level contains the producers, green plants. The plants or their products are consumed by the second-level organisms—the herbivores, or plant eaters. At the third level, primary carnivores, or meat eaters, eat the herbivores; and at the fourth level, secondary carnivores eat the primary carnivores.

Answer 2

Explanation:

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