What is coal? Where did it come from?
What will be an ideal response?
Coal is black or brown rocklike material developed from plants that died 1 million to 400 million years ago.
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The metric unit of weight is the ____________________, which is the weight of the amount of water it takes to fill a cube that is 1/100 of a meter long on each side.
Fill in the blank(s) with the appropriate word(s).
In order to prevent a duct-mounted electric heater from being energized when the fan is not on, a(n) ____________________ should be used.
Fill in the blank(s) with the appropriate word(s).
When the ventricles are relaxed, the ________ are loose and there is no resistance to the flow of blood from atrium to ventricle.
A) auricles B) chordae tendineae C) papillary muscles D) trabeculae carneae E) aortic sinuses
Diametric projection is similar to isometric projection, but instead of one axis forming an equal angle with the plane of projection, two axes form equal angles.
Answer the following statement true (T) or false (F)