Answer:
2, 2, 1, 2, 4
Explanation:
<u>Question 1.</u> - Decomposers break apart dead organisms into simpler inorganic materials, making nutrients available to the plants/primary producers.
<u>Question 2.</u> - Energy decreases as it moves up trophic levels because the energy is lost as metabolic heat when the organisms are consumed by other ones from the next level.
<u>Question 3.</u> - Energy moves through an ecosystem in a single direction from the sun to autotrophs/producers, then from producers to heterotrophs/consumers. Never backward from consumers to producers.
Sun ⇒ Producers ⇒ Consumers ⇒ Decomposers
<u>Question 4.</u> - <em>See </em><u><em>Question 1.</em></u>
<u>Question 5.</u> - Autotrophs don't need energy from other organisms. Instead, they use photosynthesis to get their food.
- Note: Fungi cannot make their own food and therefore are not autotrophic. They do not have chloroplasts, instead, they are osmotrophic!