Select the correct answer.
lyndon is investigating whether putting plastic on her windows will seal out cold winter drafts. she covers a window on the south side of her
house with plastic and measures the inside temperature near the window. she also measures the inside temperature near a window without plastic
on the north side of her house. the windows are the same size and design. why is this not an ideal controlled investigation?
a.
the windows should be different sizes to introduce variation
b.
the drafts at each window may be different because the windows aren't near each other.
c.
temperature isn't a good indicator of cold winter drafts.
d.
outside temperature is a better indicator of cold winter drafts than inside temperature
e.
the type of plastic used in the investigation isn't mentioned.
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