I don’t know why he has five heads- this is due tonight

Which two sentences in this passage talk about china’s efforts to curb environmental degradation?

The immigration act of 1924 was considered outdated by the 1960s

The main reason the us senate rejected the treaty of versailles was because, isolationists felt the us should not have gotten into the war. republicans had gained power in the senate. democrats had gained power in the senate. european nations wanted to punish germany.