In convection current why does magma become more dense when it reaches the crust? a. It heats up
b. It becomes light
c. It cools down
d. It remains the same

A2.5% (by mass) solution concentration signifies that there is a 2.5 % (by mass) solution concentration signifies that there is blank of solute in every 100 g of solution. of solute in every 100 g of solution

What four properties do all waves have in common

How many ammonium ions and how many sulfate ions are present in a 0.270 mol sample of ?