In south and southeast asia, humans commonly modify and interact with water supplies in all of the following ways except by
a. building bridges
b. building dams
c. participating in aquaculture
d. fishing

A. building bridges

Explanation:

In south and southeast Asia humans commonly modify and interact with there water environments by the fishing, building dams and rearing of fishes in the form of aquaculture. Building bridges is not their priority as they are interested in food and energy supplies.

Answer volcanic outgassing;

There is no map, maybe give the link, it may be b