Extinction of a species is most likely to occur as a result of "<span>environmental changes"
In short, Your Answer would be Option D
Hope this helps!</span>
Most as long the hypothesis is a good answer and can be answered
The short answer (and the long one for that matter) is physical properties of chemicals. If you are being marked by a machine, likely the answer is going to be physical properties.
It was decrease because the water js going from one place to another
