When an accident happens, your immune system cues up your internal fire alarm: your response. Instead of sirens, it uses chemicals to get the message out and instead of smoke or fire you sense redness, swelling, heat, and pain.

Lola needs to sign 6 invitations. using stopwatch that measures time to tenths of a second, it takes lola 5.3 seconds to sign her full name. going by the accuracy of the stopwatch, which is the most accurate determination for the number of minutes lola needs to sign all 96 invitations

Where in the cell are ribosomes made?

Most of the carbon on earth is stored in the form of