. Explain the features of a valid counterclaim and an
effective rebuttal?

It's to know your purpose before you read something because a purpose can:

Make sure the topic of your persuasive essay is not a. something someone else is writing about b. a fact c. something you have written about before

Constructing an argument: in modern american society, the legalization of marijuana continues to be controversial and hotly debated. some people find it contradictory that certain "drugs"—such as tobacco and alcohol—are legalized even though they pose proven health risks, while marijuana, which has many medicinal applications, continues to be illegal by the federal government. what reasons do you think the federal government gives for outlawing marijuana, and do the reasons support the conclusion?