Trey was asked to build a working model of a landform for a science project. He chose to build a model of a volcano.

Trey formed a base out of clay and then painted the model so it resembled a cinder cone volcano.
Finally, Trey mixed baking soda, vinegar, and red food coloring in the base, so it mimicked lava flowing out of the volcano. Once he was finished with his project, Trey's teacher asked how useful his model was.

What factor best determines the usefulness of the model?
A.
how closely the model's size matches the real world
B.
how closely the model's composition matches the real world
C.
how closely the model's color matches the real world
D.
how closely the model's behavior matches the real world

Arelationship where each person relies on the other; a give and take relationship

If we can't separate our civilized self from our savage self which will take over and why

Marian recently made the decision to try to re-wallpaper her own kitchen—which was a mistake given her personality! to compound the mistake, she selected a complex wallpaper pattern that included flowers and trees. each time she put one strip of paper on the wall, she became increasingly upset if there was not a perfect match from the pattern of one strip to the next. if one flower was off by as much as one-tenth of an inch, she would tear down the strip, remove the excess paste, and try again with the next strip. over eight hours after she started this job, she has only succeeded at putting up six strips of wallpaper, which covered about 10 percent of the room in which she was working. marian may suffer from personality disorder.