why don't localities and people use water in the most efficient way, rather than sometime in wasteful ways?

Water management and conservation

Explanation:

Water management is an essential act of minimizing water wastage. It is the process of using water in an efficient way. It is important to known that the resources of the world are not equally distributed. It is important for us to make use of this resources in order to meet our present needs without compromising that of the future generation. Water as a resource is not left out. Unfortunately most localities and people do not know this because they believe it is abundant but infant fresh water really needs to be conserved. The way through this is to create a legal framework in order to promote water management and conservation. Also public enlightenment should be carried out through environmental awareness from the grass root to the national level because the primary users lies at the grassroot.

figureit out

explanation:

because scientists need to know the stars so they understand space