All of the following are threats to biodiversity EXCEPT
a. biological magnification of toxic compounds
b. habitat fragmentation
c. invasive species
d. species preservation
The Correct Answer and Explanation is:
Correct Answer: d. species preservation
Explanation
Biodiversity refers to the variety of life in all its forms, including genetic, species, and ecosystem diversity. It is essential for ecosystem stability, resilience, and the provision of ecosystem services that support human life, such as clean water, air, food, and medicine. However, biodiversity is under significant threat from various human activities.
Let’s examine the options:
a. Biological magnification of toxic compounds
This refers to the increasing concentration of harmful substances, such as pesticides or heavy metals, as they move up the food chain. Top predators accumulate the highest concentrations, which can lead to reproductive failure, deformities, or death. This reduces species populations and disrupts ecosystems, making it a serious threat to biodiversity.
b. Habitat fragmentation
This occurs when large, continuous habitats are divided into smaller, isolated patches. This isolation makes it difficult for species to migrate, find mates, or access resources. Smaller populations are also more vulnerable to extinction due to reduced genetic diversity and increased human-wildlife conflict.
c. Invasive species
Non-native species introduced intentionally or accidentally can outcompete, prey on, or bring diseases to native species. This disrupts natural food webs and ecological balance. Invasive species are a major driver of biodiversity loss worldwide.
d. Species preservation
This is not a threat to biodiversity. In fact, it is a conservation strategy aimed at protecting and maintaining species and their habitats. Methods include establishing protected areas, breeding programs, legislation, and public education. Species preservation efforts help restore threatened populations and maintain biodiversity.
In conclusion, options a, b, and c are all significant threats to biodiversity due to their negative impacts on ecosystems and species survival. In contrast, option d (species preservation) works to support and protect biodiversity, making it the correct answer to this question.
