Effect of pollution is seen on

Options

A. variation
B. crop rotation
C. mutation
D. ecological balance

Answer

**Step-by-Step Solution:**

1. **Understanding Pollution**: Pollution refers to the introduction of harmful substances or contaminants into the environment, which can affect air, water, soil, and living organisms.

2. **Identifying the Impact**: The question asks about the effects of pollution. It is essential to recognize that pollution does not just affect one aspect of the environment; it has a cascading effect on various components of an ecosystem.

3. **Ecosystem Interconnections**: In an ecosystem, all organisms are interconnected. When pollution increases, it disrupts the ecological balance, which is the relationship between different organisms and their environment.

4. **Effects on Ecological Balance**: The first and most significant effect of pollution is seen on the ecological balance. This balance is crucial for the survival of species and the functioning of ecosystems. When pollution occurs, it can lead to a decline in biodiversity, alter species interactions, and disrupt food chains.

5. **Excluding Other Options**: The question also mentions variations, crop rotation, and mutations. These terms are not directly related to the immediate effects of pollution:
- **Variation**: Refers to genetic differences within a species, not directly caused by pollution.
- **Crop Rotation**: An agricultural practice that does not directly relate to pollution effects.
- **Mutation**: Changes in genetic material that can occur due to various factors but are not a direct consequence of pollution.

6. **Conclusion**: Therefore, the correct answer to the question "Effect of pollution is seen on" is the ecological balance. This is the primary aspect that gets disturbed when pollution increases in an environment.

**Final Answer**: The effect of pollution is primarily seen on the ecological balance.

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