The answer is c. 1970.
The Clean Water Act came into force in the decade 1970s. The act is to regulate the discharges of pollutants into the waters and to regulate quality of surface water. The clean water act required industries to reduce or eliminate point source pollution in surface waters.
Answer:
"Hey"
"Wassup?"
"Nun, u?"
"Same."
Explanation:
Basically every conversation when texting :/
u could make it more interesting
