Flow of Energy

Where does all of the energy in an ecosystem originate?

Which of these choices is the original source of energy that humans receive from consuming an herbivore such as a cow?

What happens to energy as it moves up the food pyramid, from producers up to tertiary consumers?

All of the given answer options represent organisms that could coexist in an ocean ecosystem. In this hypothetical ecosystem, which organism will receive the least amount of energy in the food web?

From where do autotrophs obtain their carbon, nutrients, and minerals?