How much free speech should be allowed in the United States? Consider controversial speakers on campus: what is the duty of a college to provide a platform for different viewpoints? What is the duty of a college to provide for the safety of its students? Is the best way to counter controversial or even hate speech be more speech? Or does allowing such speech lead to greater danger, like violence?

In a limited way.

Explanation:

Free speech should be allowed in the United States in a limited manner in order to avoid any violence. The duty of a college is to provide a platform to the students so they can share their views on different points or problems of the government and the society. Counter controversial or hate speech should be banned by the college in order to avoid any violence between students. Yes, allowing hate speech usually lead to violence because there are insulting words which can not tolerate by opposite people.

If an earthworm is exposed to a strong odor, then it will back away from the odor because it will think that the odor is a sign of danger.

Explanation: It relates the worm to danger and they have to move away from danger or else they will get eaten.