Why is biodiversity important to ecosystems?

• A. It decreases the availability of resources for all organisms.
• B. It reduces the number of ecological niches.
• C. It leads to the extinction of native species.
• D. It increases ecosystem stability and resilience to disturbances.

Answer: (D)

Verified step by step guidance

1. Understand the concept of biodiversity: Biodiversity refers to the variety of life in all its forms, including genetic, species, and ecosystem diversity. It plays a critical role in maintaining the balance and functionality of ecosystems.
2. Recognize the relationship between biodiversity and ecosystem stability: Ecosystems with high biodiversity tend to be more stable and resilient because they have a greater variety of species that can perform different roles, such as nutrient cycling, pollination, and decomposition.
3. Consider the impact of disturbances: When an ecosystem faces disturbances (e.g., natural disasters, climate change, or human activities), high biodiversity allows it to recover more effectively. This is because the presence of diverse species ensures that some can adapt or thrive under changing conditions.
4. Evaluate the incorrect options: The incorrect options suggest negative impacts of biodiversity, such as decreasing resource availability, reducing ecological niches, or causing extinction. These are misconceptions, as biodiversity generally enhances resource availability and supports ecological niches rather than reducing them.
5. Conclude why the correct answer is valid: The correct answer highlights that biodiversity increases ecosystem stability and resilience to disturbances. This is supported by scientific evidence showing that diverse ecosystems are better equipped to handle environmental changes and maintain their functionality.