Is "windpower is far from perfect" an opinion or fact and why

Reread paragraph 1 of “welcome to ‘rise of the knights.’” which word from the paragraph does not create a tone of enthusiasm?

Read this excerpt from leah missbach day's foreword to wheels of change.as wbr's resident photographer i am privileged to see firsthand the impact bicycles have on the lives of our recipients.why does the author include this excerpt?

Kyle and his brother have a marble set of the marbles 12 are blue this represent 50 over a hundred of all the marbles what decimal is equivalent to 50 / 100