A: I do think people are consuming more and more habitat region of wild life. As authority has provided the number of wilds are decreasing, I think it due to man kind.

B: I couldn't agree with you more. Last time I went to Sichuan, pandas can be found everywhere in the bamboo forest. But only 10 years has passed, panda merely can be found in zoos or protecting regions there. I think animal extinction is more and more common now.

C: I can only partly agree with former two, because I think animal's termination is not to blame human only. Enviormental changes really matters to animals. Even global warming is not totally ours fault, it is reported by Australian researcher, herts of cows can leave tons of waste gases into the air daily which is tested out most CO2. That's much more than human can produce a day.

D: Yes, I surpport C for evolutional theory of Darwin's reason. I think species is developping their genes when passing down, maybe those extincting animals are those who don't fit the surroundings?