A model biosphere reserve is a square. The core is 10 km wide…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
A model biosphere reserve is a square. The core is wide. A buffer zone wide goes all round the core. A transition zone wide goes all round the buffer.
- What is the area of the whole reserve, in square kilometres?
- What per cent of the area is the core? Give one decimal.
- What per cent is the buffer, and what per cent is the transition zone? Give one decimal each.
Need a reminder? The key ideaShow
In situ conservation protects a species on site. A hotspot has a very high species richness and a high endemism. NCERT gives: hotspots cover less than 2 per cent of the land, and strict protection could cut the ongoing extinctions by almost 30 per cent. A biosphere reserve has a core, a buffer and a transition zone (the zones and their widths are standard knowledge, and the area arithmetic is not in the NEET syllabus).
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Given. Core . Buffer . Transition .
Step 1. (a) The side is . The area is .
Step 2. (b) The core is . per cent.
Step 3. (c) The core plus buffer is a square of side , so . The buffer is , which is per cent. The transition zone is , which is per cent.
Answer: ; per cent; per cent; per cent.
Check. per cent.
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