Which of the following is an example of a decomposer?

• A. Lizards
• B. Coyotes
• C. Trees
• D. Bacteria

Answer: (D)

Verified step by step guidance

1. Understand the role of decomposers in an ecosystem: Decomposers are organisms that break down dead or decaying organic matter into simpler substances, recycling nutrients back into the environment. Examples include bacteria, fungi, and certain insects.
2. Analyze the options provided: Lizards, coyotes, and trees are not decomposers. Lizards and coyotes are consumers (specifically carnivores or omnivores), while trees are producers that create energy through photosynthesis.
3. Focus on bacteria: Bacteria are microscopic organisms that play a crucial role in decomposition. They break down organic matter into simpler compounds like carbon dioxide, water, and nutrients, which are then available for use by plants and other organisms.
4. Relate bacteria to their ecological importance: Bacteria contribute to nutrient cycling, such as the nitrogen cycle, and help maintain soil fertility by decomposing organic material.
5. Conclude that bacteria are the correct answer: Based on their function as decomposers, bacteria fit the definition and are the correct choice among the options provided.