Answer:
A. Phytoplankton
Explanation:
They as producers contribute the most. Others do too, but not as much.
Answer:
- Abiotic factors refer to non-living physical and chemical elements in the ecosystem.
- Abiotic resources are usually obtained from the lithosphere, atmosphere, and hydrosphere.
- Examples of abiotic factors are water, air, soil, sunlight, and minerals.
<span>All multicellular organisms have specialized cells.</span>