Imagine that you have been given the job of setting aside habitat to preserve the diversity of birds in a swath of lowland rainforest. Three plans have been proposed, each of them totaling 200 km2. Plan A consists of 20 small, scattered reserves. Plan B is one large reserve. Plan C is five medium-sized reserves connected by corridors. Which of the following do you think ranks the reserves in order of potential biodiversity, highest to lowest?

Option B, option C, option A

Explanation:

Large single preserve is better than same area of several smaller preserve because scattered smaller preserves standing risk of less hospitable economic system outside the preserve boundary which makes option B the best while the creation of passage ways in option C reduces the risk of less hospitable ecosystem outside the preserve which can affect the animals and option A is usually not considered in biodiversity guidelines for preserves.