Which one of the following is a wrong statement?

Options

A. Most of the forests have been lost in tropical areas.
B. Ozone in upper part of atmosphere is harmful to animals.
C. Greenhouse effect is a natural phenomenon.
D. Eutrophication is a natural phenomenon in freshwater bodies.

Answer

To determine which statement is wrong, we will analyze each statement provided in the question.

### Step 1: Analyze the first statement
- **Statement**: Most of the forests have been lost in the tropical area.
- **Analysis**: This statement is true. Tropical forests have been significantly affected by deforestation due to agriculture, logging, and urbanization.

### Step 2: Analyze the second statement
- **Statement**: Ozone in the upper part of the atmosphere is harmful to animals.
- **Analysis**: This statement is incorrect. Ozone in the upper atmosphere (stratosphere) is beneficial as it forms the ozone layer, which protects living organisms from harmful ultraviolet (UV) radiation from the sun.

### Step 3: Analyze the third statement
- **Statement**: Ozone protects the human body from UV rays.
- **Analysis**: This statement is true. The ozone layer absorbs the majority of the sun's harmful UV radiation, thereby protecting human health and the environment.

### Step 4: Analyze the fourth statement
- **Statement**: Greenhouse effect is a natural phenomenon.
- **Analysis**: This statement is true. The greenhouse effect is a natural process that warms the Earth's surface. It is essential for maintaining the planet's temperature.

### Step 5: Analyze the fifth statement
- **Statement**: Eutrophication is a natural phenomenon in freshwater bodies.
- **Analysis**: This statement is also true. Eutrophication can occur naturally over time as lakes age, but it is often accelerated by human activities, such as nutrient runoff from agriculture.

### Conclusion
After analyzing all the statements, the wrong statement is:
- **Ozone in the upper part of the atmosphere is harmful to animals.**

### Final Answer
The wrong statement is: **Ozone in the upper part of the atmosphere is harmful to animals.**

---