posted on May, 20 2013 @ 05:29 PM
Let me answer your question with a question. I think you will find it a good example, if you search and study on topic for a bit.
Yellowstone park "not so distant past"
A park ranger recognized a the area of the park from a pic. What was taken a lot longer ago.
Unfortunately he was only able to id a small river bed and stuff that survives the passing of time.
The pic. showed that same river, but with a lot of bushes and a variety of animal and plant species.
Something happened in between the pic. was taken and when he noticed the area to be a lot more silent. No plants or bushes at the river sides, no
animals that hang out in the area, cause it appeared that all of their commodities that made it a good place to be at..... vanished.
What happened played such a massive role in the area, to lose the biodiversity it used to shelter ?
I wish I get a chance to visit the park some day. It's just that I can't walk and swim the distance so easy.
I've got a nasty injury that won't allow me to train to get fit enough to get there.
edit on 5/20/2013 by Sinter Klaas because: (no reason given)