Which statement describes decomposers? A. Decomposers are insignificant organisms in the ecosystem and can be absent in some ecosystems B. Decomposers can produce their own source of energy and can sometimes act as primary producers C. Decomposers are those organisms that recycle matter in the ecosystem D. All the above

The correct answer is D. Decomposers are those organisms that recycle matter in the ecosystem. They break down dead organisms and organic wastes into simpler substances that can be reused by other organisms. Decomposers are essential for the health of ecosystems, as they help to keep the environment clean and prevent the build-up of waste.

Option A is incorrect because decomposers are not insignificant organisms. They play a vital role in the ecosystem by recycling matter.

Option B is incorrect because decomposers cannot produce their own source of energy. They are heterotrophs, which means that they must obtain their energy from other organisms.

Option C is incorrect because decomposers are not primary producers. Primary producers are organisms that can produce their own food using photosynthesis or chemosynthesis. Decomposers, on the other hand, cannot produce their own food and must obtain it from other organisms.