The air was rent by piercing cries . What does it mean and what figurative language they using ?!

It means to disturb "the air." For example, the piercing cries is what the air is being disturbed by, so in general, it was silent when all of a sudden it has become disturbed or interrupted. I think this is a metaphor but I'm not sure.

*sorry if im wrong*

in this passage from chapter 6 of "animal farm", by george orwell, what the author is ridiculing in this passage is the frivolity of some rules.

clover, the mare, believes she remembers that the fourth commandment forbade sleeping in beds because it was something that humans did. snowball, napoleon, and the pigs are brain-workers who look after the welfare of the farm. they are the obvious leaders because they are smart, and so they are entitled to eat the best food and sleep in beds. it is squealer, who says these lines making the difference between sleeping with sheets, what humans do, and sleeping in beds, what pigs do. the unwillingness to question authority makes the oppressed to obey without thinking.

i highly recommend james madison. the work is simple and if you stick to it you can graduate quickly. the work is simple and the teachers are very interactive. the flow of the school work is all on your time so it's not really a dead line. go on their website and look at pricing and enrollment plans. i know when i signed up i got a discount. you pay a certain amount of money every month. it's kind of expensive but i did it in 6 days tops with just my senior year left : )