all of the following are highly productive ecosystems except

Options

A. coral reefs
B. sugarcan fields
C. tropical rainforest
D. Deserts

Answer

To solve the question "All of the following are highly productive ecosystems except," we need to evaluate the productivity of each ecosystem mentioned in the options. Here's a step-by-step breakdown of the solution:

### Step 1: Identify the Ecosystems
We need to analyze the ecosystems provided in the options. The ecosystems mentioned are:
1. Coral Reefs
2. Sugarcane Fields
3. Tropical Rainforest
4. Deserts

### Step 2: Analyze Each Ecosystem
- **Coral Reefs**: Coral reefs are known to be highly productive ecosystems. They receive ample sunlight and nutrients, which support a diverse range of marine life.

- **Sugarcane Fields**: Sugarcane fields are also highly productive. They thrive in tropical areas with plenty of sunlight and are cultivated for their high yield.

- **Tropical Rainforest**: Tropical rainforests are among the most productive ecosystems on Earth. They have high biodiversity and productivity due to the abundant rainfall and sunlight.

- **Deserts**: Deserts are characterized by low rainfall and extreme temperatures, making them the least productive ecosystems. They lack the necessary conditions for high productivity.

### Step 3: Conclusion
After analyzing all the options, we can conclude that the ecosystem that is not highly productive is **Deserts**. Therefore, the answer to the question is **Deserts**.

### Final Answer
All of the following are highly productive ecosystems except **Deserts**.

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