Answers

2016-02-24T09:06:03+08:00

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
1. They did not survive the challenges that befalls them. Example of them are diseases. The diseases almost kill all of them, and after that they decrease and decrease and after that they extinct. Natural calamities are also applied like earthquake, typhoon, excessive weather, etc. 2. Human hunts them abusively.
0
2016-03-01T17:09:36+08:00
They are being ate by other big organisms and plants was being cut.
0