The term ''the evil quartet'' is related with four major causes of
(a) Forest loss
(b) Population explosion
(c) Air pollution
(d) Biodiversity losses

Options

A. forest loss
B. population explosion
C. air pollution
D. biodiversity losses

Explanation

### Step-by-Step Text Solution:

1. **Understanding the Term "Evil Quartet":**
The term "the evil quartet" refers to four major causes that lead to biodiversity loss. It is essential to identify these causes to understand their impact on ecosystems.

2. **Identifying the Four Major Causes:**
The four major causes of biodiversity loss that constitute the "evil quartet" are:
- **Habitat Loss and Fragmentation:** This occurs when natural habitats are destroyed or divided into smaller, isolated patches, leading to a decline in species populations and diversity.
- **Overexploitation:** This refers to the excessive use of natural resources, such as overfishing, hunting, or harvesting plants, which can deplete species and disrupt ecosystems.
- **Alien Species Invasion:** The introduction of non-native species can lead to competition with native species for resources, often resulting in the decline or extinction of native populations.
- **Coextinctions:** This occurs when the extinction of one species leads to the extinction of another species that is dependent on it for survival.

3. **Conclusion:**
Based on the definitions and explanations of the causes, it is clear that the term "the evil quartet" is specifically related to biodiversity losses. Therefore, the correct answer to the question is:
- (d) Biodiversity losses