The harris poll asked a sample of smokers, "do you believe that smoking will probably shorten your life, or not? " of the 1010 people in the sample, 848 said yes. (a) harris called residential telephone numbers at random in an attempt to contact an srs of smokers. based on what you know about national sample surveys, what is likely to be the biggest weakness in the survey?

To solve their problems, mesopotamians used irrigation, a way of supplying water to an area of land. to irrigate their land, they dug out large storafe basins to hold water supplies these ditches brought water to the feilds. to protect their feilds from flooding, farmers built up the banks of the tigris and euphrates.hope ths !

Ifound the exercise on the internet. attached is the list mentioned above.in order for a compound to be considered optically active it can't have any axis or plan of symmetry. the molecule  shouldn't also  be superimposable on its mirror image.with such considerations, the compounds that are optically active are: -third compound on the first image is optically active; -second and third compound from the second image are optically actives.

Joke: i thought it said drake and josh at first answer: probably unsure about this law. depending on how long the time is.