According to the evidence presented in Sources 1.1, 1.3 and 1.4, which of the following are valid reasons parishes and states must often work together to protect watersheds? Select the three correct answers. A
Recharge areas may span across state lines.
B
Pollution from one parish can affect drinking water in other parishes.
C
Increased human development, such as paving areas for roads, can increase surface runoff.
D
Increased human development, such as paving areas for roads, can increase infiltration of precipitation into underground aquifers.

The valid reasons include:

A

Recharge areas may span across state lines.

B

Pollution from one parish can affect drinking water in other parishes.

D

Increased human development, such as paving areas for roads, can increase infiltration of precipitation into underground aquifers.

Explanation:

Watershed is an important aspect in every country which helps to ensure adequate source of water. If there is anything which affects it, there is a possibility of those area losing that source of water. The above reasons are part of the need why there is need for the states to work together to protect those watersheds.

the answer is

a) revise existing treaties

b) do away with political alliances

c) prevent the spread of communism

d) bring an end to european colonization

the main goal of the southeast asia treaty organization was to prevent the spread of communism in southeast asia.