I would say C.
I hope it’s right or u can individually search up each of those animals to check that they’re a secondary consumer.
Answer: Humans and other organisms use the soil to decompose these waste materials into new materials.
Explanation:
I am going to assume you meant the "first trophic level" of the ecosystem. The first tropic level of an ecosystem is made up of producers, so the answer is C, Acorns.
I think its uhhhh A sjshshsjsgshs
Plants need nitrogen in order to grow. Nitrogen is abundant in the earth's atmosphere, but plants cannot use it in that particular form (nitrogen gas). Certain bacteria which reside on some plant roots are able to change atmospheric nitrogen into a form that plants can use (ammonia).