For each of the following qustions four chices have been provided. Select the correct alternatives. ________ ecosystem is formed due to low rainfail per pyar year.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the type of ecosystem that is formed due to low rainfall per year.

2. **Identifying Ecosystems**: Recall the different types of ecosystems, such as forests, grasslands, deserts, and aquatic ecosystems.

3. **Analyzing Rainfall Requirements**:
- Forest ecosystems typically require high rainfall.
- Grasslands receive moderate rainfall.
- Aquatic ecosystems depend on water bodies, not rainfall.
- Deserts are characterized by low rainfall.

4. **Defining the Desert Ecosystem**: The desert ecosystem is defined by having very little rainfall, often less than 25 cm (or about 10 inches) per year.

5. **Conclusion**: Based on the information, the correct alternative for the question is the "desert ecosystem," as it is specifically formed due to low rainfall.

**Final Answer**: The correct alternative is the "desert ecosystem."

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