Do to 、because 、because of 的区别,

第一句应该改为Due to some people‘s coming to realize the negative effects of smoking,they are compelled to give up smoking.因为due to 后面应该加名词从句
because 后面加句子
Because some people come to realize the negative effects of smoking,they are compelled to give up smoking.
because of 后面加名词或从句 上面的due to 就可以改为because of some people‘s coming to realize the negative effects of smoking

because+句子
because of+词组或名词
due to+词组或名词
due to和because of都是“因为”可以互换，但due to 不能置于句首(通常看到的放在句首是不符合规定的），而because of前后都可以放。

because+句子
because of+词组或名词
due to+词组或名词
第一句应该改为Due to some people‘s coming to realize the negative effects of smoking, they are compelled to give up smoking. 因为due to 后面应该加名词从句
becaus...