Which of the following best illustrates how conservation efforts have positively impacted ecosystems?

• A. Introduction of invasive species to control pests.
• B. Reintroduction of native species leading to increased biodiversity.
• C. Overharvesting of resources to boost economic growth.
• D. Expansion of urban areas into natural habitats.

Answer: (B)

Verified step by step guidance

1. Understand the context of conservation efforts: Conservation efforts aim to protect and restore ecosystems, often focusing on maintaining or increasing biodiversity, which is the variety of life in a particular habitat or ecosystem.
2. Analyze the options provided: Evaluate each option to determine whether it aligns with the goals of conservation efforts and whether it has a positive impact on ecosystems.
3. Option 1: 'Introduction of invasive species to control pests' - This is generally not a positive conservation effort because invasive species can disrupt ecosystems, outcompete native species, and reduce biodiversity.
4. Option 2: 'Reintroduction of native species leading to increased biodiversity' - This aligns with conservation goals as it restores the natural balance of ecosystems and promotes biodiversity, which is a key indicator of a healthy ecosystem.
5. Option 3 and 4: 'Overharvesting of resources to boost economic growth' and 'Expansion of urban areas into natural habitats' - Both of these actions typically harm ecosystems by depleting resources and reducing natural habitats, which negatively impact biodiversity.