please help with question

Please explain (a) the concept of consideration, and (b) why consideration is important in contract law. Then, please provide an example of (a) an agreement with consideration, and (b) an agreement without consideration. Edit View Insert Format Tools Table Please explain (a) what the Commerce Clause of the US Constitution allows Congress to do, and (b) why this power has become so important. Then, please state how the US Supreme Court decision of United States v. Lopez has affected Congressional power under the Commerce Clause. Edit View Insert Format Tools Table