What is one reason mammals are divided into groups?
What will be an ideal response?
To distinguish how their young develop; to distinguish what they eat.
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Frayed cords on electrical equipment must be ____________________ or ____________________ immediately.
Fill in the blank(s) with the appropriate word(s).
What is the “condenser split” of most low temperature refrigeration units?
a. 15° b. 25° c. 35° d. 45°
PV arrays work best when the sun’s rays shine ___________ to the cells because of the effect of tilt angle.
a. parallel b. perpendicular c. level d. plumb
Which of the following processes are most apt to encourage good soil aeration?
A) creation of more macropores B) root respiration C) organic matter decomposition D) diffusion of oxygen from the soil to the atmosphere E) reaction of oxygen with organic matter