A model biosphere reserve is a square. The core is 6 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 wide goes all round the core, and a transition zone wide goes all round the buffer.
- What per cent of the area is the core, the buffer and the transition zone? Give one decimal each.
- The managers want the buffer to have the same area as the core. How wide should the buffer be? Give the answer in kilometres to two decimals.
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 whole side is , so the area is . The core is , which is per cent. The core plus buffer is , so the buffer is , which is per cent. The transition zone is , which is per cent.
Step 2. (b) The core plus buffer must be . Its side is . The buffer width is .
Answer: , and per cent; .
Check. A square of side has an area of .
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