Each energy level of an atom has a maximum number of it can hold.

a) neutrons
b) quarks
c) protons
d) electrons

Which process transfers heat from inside earth to its surface? convection currents in mantle pulling away of tectonic plates drawing in of tectonic plates convection currents in crust

Anurse used a 0.02-mg/l solution of disinfection to clean a patients wound. what is the concentration of the solution expressed as a percentage?

One similarity and one difference between an element and a mixture of elements