Final answer:
The principles of conservation biology are that biodiversity is essential for life, humans should preserve vital ecological processes, and the best conservation method is protecting intact ecosystems.
I and III are correct
Step-by-step explanation:
The underlying principles of conservation biology include: I) Biodiversity is necessary for all life on earth, II) Humans should not disrupt vital ecological processes, and III) The best way to preserve earth's biodiversity is to protect intact ecosystems. Each of these principles addresses a different aspect of the approach needed to conserve biodiversity effectively.
Biodiversity encompasses the variety of life on Earth at all levels, from genes to species to ecosystems. Conservation biology recognizes the intrinsic value of this biodiversity and its essential role in providing ecosystem services that support human life.
Conservation efforts must integrate with other human activities, reflecting the profound impact humans have had on the biosphere. This integration includes setting aside protected areas and habitat restoration, along with legislative measures to regulate human impact on the environment.
Effective conservation also requires an understanding of not only the biological but also the socio-economic factors involved. This means incorporating diverse fields and engaging a wide array of stakeholders in conservation actions, such as working with local and indigenous communities, government officials, and other non-biologist actors.