Which one of the following is a WRONG statements ?

Options

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

Answer

To determine which statement is wrong, let's analyze each statement one by one:

1. **Statement 1**: "Ozone in the upper part of the atmosphere is harmful to animals."
- This statement is **incorrect**. Ozone in the upper atmosphere, often referred to as the "ozone layer," is beneficial as it protects living organisms from the sun's harmful ultraviolet (UV) rays. It acts as a shield, preventing these rays from reaching the Earth's surface, which can cause harm to animals and plants.

2. **Statement 2**: "Greenhouse effect is a natural phenomenon."
- This statement is **correct**. The greenhouse effect is indeed a natural process that warms the Earth's surface. It occurs when the sun's energy reaches the Earth and is reflected back into space, but greenhouse gases trap some of that energy, keeping the planet warm enough to sustain life.

3. **Statement 3**: "Eutrophication is a natural phenomenon in freshwater bodies."
- This statement is **correct**. Eutrophication is a natural process that occurs when water bodies become enriched with nutrients, leading to excessive growth of algae and other aquatic plants. While it can be exacerbated by human activities, it is a natural phenomenon that occurs in freshwater ecosystems.

4. **Statement 4**: "Most of the forests have been lost in the tropical areas."
- This statement is **correct**. Deforestation is a significant issue in tropical areas, where many forests have been lost due to logging, agriculture, and urbanization. This loss of forest cover has serious implications for biodiversity and climate change.

Based on the analysis, the **wrong statement** is:

**Answer**: "Ozone in the upper part of the atmosphere is harmful to animals."