Answer: The sun
Explanation: Primary producers obtain their energy via the sun through the process of photosynthesis.
Organisms in an ecosystem acquire energy in a variety of ways, which is transferred between trophic levels as the energy flows from the bottom to the top of the food web, with energy being lost at each transfer.
It’s D. Oxygen. It is not a greenhouse gas
Substrate Concentration I believe
Answer:
Phototrophs
Explanation: Some organisms obtain their energy from the sun by the process of photosynthesis. These organisms are known as phototrophs because they can make their own organic molecules using sunlight as a source of energy.
