Write geographical reason.
As compared to Amazon, pollution in river Ganga will affect human life greatly.
The major reason behind the river Ganga impacting human life on a large scale is that millions of people depend on it for their livelihood. Further, the extent of pollution in the Ganga has not only led to many fatal diseases such as cancer but has also led to a massive loss of aquatic life.
Amazon, on the other hand, has a different set of factors such as inaccessibility due to frequent flooding and dense undergrowth as the plains are mainly covered by tropical rainforests.