Corals absorb from the ocean to form their skeletons.
a. calcite
c. quartz
b. calcium
d. limestone

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

How much would the freezing point of water decrease if 4 mol of sugar were added to 1 kg of water(k=1.86 c/mol/kg for water and i=1 for sugar

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.