the act requires industries to reduce or eliminate the release of point source pollution into surface waters

What are new social classes emerged due to advancement in agriculture ?

1.     in what kind of government does a small group have a firm control over a country?  

What do most climatologists see as a major cause of rising global temperatures? a. earth's closer proximity to the sun due to its gravitational pull b. greenhouse gases produced by burning fossil fuels c. rising ocean levels caused by melting polar ice sheets d. water pollution cause by industrial waste