GWD1-Q9 to Q12:

sfstm

there are fewer salmon in degraded regions than in pristine ones; however, habitat loss also has the potential to reduce genetic diversity.
翻译: 在被污染的地方比在未污染的地方的salmon要少，但是，栖息地的流逝也潜在的降低基因多样性
为啥中间有个However？前后文怎么就是虽然但是的关系了？？

elenaknight

我觉得不是与上句的反驳而是更上面说habitat loss caused salmon's number to decrease,然后这句说不只是让数量减少了，而且让基因的多样性减少了。