Which type of organism produces its own food/energy?

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

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 pyramid?

What is the main way energy is lost in a food chain?

Which of the following can be described as a symbiotic relationship in which both species benefit?

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

What is the main source of energy in an ecosystem?

A finch eats a caterpillar. Assuming the caterpillar had 100% energy, what percentage of the caterpillar's energy will the finch be able to utilize?

A heterotroph is best defined as which of the following?

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