Agemstone is a hard, colorful mineral with a glassy or shiny luster. true or false?

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix.b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds.c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer.d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c