Maximum energy amongst ecosystems is contributed by

Options

A. crops
B. forests
C. coral
D. fuel gas

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about which ecosystem contributes the maximum energy. In ecological terms, this is often related to primary productivity, which is the amount of energy produced by primary producers (like plants) through photosynthesis.

2. **Defining Primary Productivity**: Primary productivity refers to the rate at which energy is converted by photosynthetic and chemosynthetic autotrophs to organic substances. It is usually measured as biomass produced per unit area over a specific time period.

3. **Identifying Primary Producers**: In ecosystems, primary producers are typically green plants and phytoplankton in aquatic systems. They utilize sunlight to convert carbon dioxide and water into glucose and oxygen, which forms the basis of energy for other organisms in the ecosystem.

4. **Comparing Ecosystems**: Different ecosystems have varying levels of primary productivity. For example, forests, crops, and coral reefs all have different capacities for energy production.

5. **Recognizing the Most Productive Ecosystem**: Among the options provided (crops, forest, coral, fuel gas), coral reefs are known to be highly productive ecosystems, particularly when considering their associated environments like estuaries. Coral reefs can produce a significant amount of biomass due to their diverse and dense populations of primary producers.

6. **Conclusion**: Therefore, the ecosystem that contributes the maximum energy, or primary productivity, is the coral reef ecosystem.

**Final Answer**: The maximum energy amongst ecosystems is contributed by corals.

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