Which of the following is not a cause for loss of biodiversity ?

Options

A. Destruction of habitat
B. Invasion by alien species
C. Keeping animals in Zoological parks
D. Over-exploitation of natural resources

Answer

To solve the question "Which of the following is not a cause for loss of biodiversity?" we will analyze each option provided:

1. **Destruction of Habitat**: This is a well-known cause of biodiversity loss. When natural habitats are destroyed for agriculture, urban development, or other human activities, many species lose their homes, leading to a decline in biodiversity.

2. **Invasion of Alien Species**: This is another significant cause of biodiversity loss. When non-native species are introduced to an ecosystem, they can outcompete, prey on, or bring diseases to native species, disrupting the local ecosystem balance.

3. **Keeping Animals in Zoological Parks**: This option is different from the others. Zoological parks, or zoos, are designed to conserve species, educate the public, and provide a safe environment for animals. While they may not replicate natural habitats perfectly, they do not directly cause loss of biodiversity. In fact, they can play a role in conservation efforts.

4. **Over-exploitation of Natural Resources**: This is also a major cause of biodiversity loss. Overfishing, excessive hunting, and unsustainable harvesting of plants can lead to the decline or extinction of species.

Now, based on this analysis, we can conclude that the option that is **not a cause for loss of biodiversity** is:

**C. Keeping animals in zoological parks.**

### Summary of Steps:
1. Identify and analyze each option related to biodiversity loss.
2. Determine which options are recognized causes of biodiversity loss.
3. Conclude that keeping animals in zoological parks does not contribute to biodiversity loss.