请问关于due to 的语法点

due to poaching and increased cultivation in their native habitats, researcher have determined that there are fewer than 100 Arabian leopard left in the wild ,and that these leopard are thus many time as rare as China's giant pandas.

正确答案是Researchers have determined that, because of poching and increased cultivation in their native habitats, there are fewer than 100 Arabian leopard left in the wild, and that these leopards are thus many times more rare than China's giant pandas.

解释说due to错了，因为修饰的对象不对，不太明白是什么意思。。。

还有就是请问有many times more +adj +than这种用法吗。。。谢谢

due to 在英文中的解释是caused by，选择due to 和because of的时候，可以替换一下，如果用caused by替换过来没有问题那才可以，due to是强调直接引出结果的那种原因。

many times more+adj+than是 倍数+比较级+than的用法，例如 Amy is twice older than Bob.

就是说后句一定要是due to这一句所引起的结果喽？