The U.S. Congress has made several attempts to pass and maintain legislation that limits children's exposure to online pornography, but eventually each of these laws has been ruled out because they were unconstitutional.?

The ________ is the value of an asset at the end of its useful life

Fill in the blank(s) with correct word

Let G be an undirected graph. Let u and v be two vertices in G. A(n) ____________________ in G is a simple path in which the first and last vertices are the same.

Fill in the blank(s) with the appropriate word(s).