State or federal or both if someone is polluting the environment

Both.

A variety of Federal programs, including the Clean Water Act, have delegated authority built in which means that the States enact the Federal programs.

So, both is the correct answer.

The Federal Service for Hydrometeorology and environmental monitoring performs environmental monitoring of the environment, informs the population about changes in the environment through a wide network of observation posts and etc.

before, mexicans where an indian tribe but when the spanish took over, they changed their language to spanish.

hope this : d

no statements but ok.

the statement that best describes the idea of manifest destiny that was used in the 19th century would be that "it was fate that the united states would continue to  expand westward," since people thought the us was "destined" to do so.