Answer:
That layer is called the a horizon, so the answer is A.
Explanation:
Answer:The producers, who manufacture their own food through photosynthesis or chemo synthesis, are at the bottom of the pyramid. The second level is made up of herbivores, or principal consumers. In the following portions of the pyramid, secondary and tertiary consumers, omnivores and carnivores, are found.
Explanation:
Parasitism is an interaction in while the host is harmed