B. Polar Molecule
Explanation - polar means that the electrons are not shared evenly. Water (H2O) has two Hydrogen atoms which are positive because they give their electrons away, and one Oxygen atom which is negative because it received the electrons
One minute has 60 seconds, One hour has 60 minutes and one day has 24 hours. Thus, 80 x 60 x 24 = 86,400 sec
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<span>Adoptive optics, in
which it’s a lot easier for a computer to constantly monitor and change the
shape of multiple thin mirrors than it is to use a telescope with a large thick
mirror that has to thermally adjust before being able to focus sharply and even
then a large mirror or lens cannot compensate for air turbulence the way
telescope with computer controlled adaptive optics can. </span>
