Forest, grassland and deserts are examples of

Options

A. 1)Man-made ecosystems
B. 2)Aquatic ecoystems
C. 3)Terrestrial ecosystems
D. 4)(1) & (2)

Answer

To solve the question "Forest, grassland, and deserts are examples of," we need to analyze the options provided and understand the definitions of the types of ecosystems mentioned.

### Step-by-Step Solution:

1. **Understand the Concept of Ecosystem**:
An ecosystem is a community that includes both living (biotic) and non-living (abiotic) components interacting with each other.

2. **Analyze the Options**:
- **Option 1: Man-made ecosystem**: This type of ecosystem is created and maintained by humans. Examples include aquariums and gardens. Since forests, grasslands, and deserts occur naturally and are not created by humans, this option is incorrect.

- **Option 2: Aquatic ecosystem**: This ecosystem is characterized by water bodies. Examples include freshwater ecosystems and marine ecosystems. Forests, grasslands, and deserts do not fit into this category as they are not based in or around water bodies, making this option incorrect as well.

- **Option 3: Terrestrial ecosystem**: This type refers to ecosystems found on land. Forests, grasslands, and deserts are all land-based ecosystems. Therefore, this option is correct.

- **Option 4: One and Two**: This option combines the first two options, which we have already determined to be incorrect.

3. **Conclusion**:
Based on the analysis, the correct answer is **Option 3: Terrestrial ecosystem**.

### Final Answer:
Forest, grassland, and deserts are examples of **terrestrial ecosystems**.

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