because it helps to create better environment for them. without human near the animal and bird places pollution cannot mostly affect them and the rare animals and birds will not get lost.this helps them to have a better place to rise up their offspring's.
good luck
I hope this will help you...
Think of an equation:
200 - 91 = 109
You can do anything to this equation, as long as you do the same thing to both sides. So, if you add 91 to both sides, you will get:
200 = 200
Since this holds true, Susan's strategy to add her answer to 91 makes sense.
It suggests, with vivid language, her sense of being seen as a dangerous revolutionary by the authorities in South Africa.
Thanks for the answer ;D