Another hypothesized human-related cause is fertilizer runoff.
另一个假设的与人类有关的原因是化肥流失。
2
Many are endangered and in places that are threatened by pollution, habitat loss and other human-related problems.
很多都因为环境污染、栖息地丧失、人类活动造成的相关问题，而处于濒临灭绝的危险。
3
The giant pandas' naturally slow breeding rate prevents a population from recovering quickly from illegal hunting, habitat loss, and other human-related causes of mortality.