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First expand each set of brackets:

(3x - 6) - (2x - 4)

Then simplify:

3x - 6 - 2x - (-4) = x - 2

The jungle in Conrad's "Heart of Darkness" functions simulatenously as a character and a setting for much of the short story's plot. As a setting, the junlge is the location for Kurtz's quest fo...

Physical barriers:

• skin to prevent entry of organisms into the bloodstream

• cilia lining the nasal passages / bronchi to prevent entry to lungs / remove mucus 

...

First write down the series of numbers e.g.  8,  12,  16,  20.

Calculate the difference between each term in the series 12-8 = 4, 16-12 = 4,  20-16 = 4 This shows that the expression will begin wit...

The combustion of biodiesel produces less carbon dioxide, sulfur dioxide and particulates than that of regular diesel. This causes less global warming from the greenhuse effect and less sulfur dioxide pol...