Samuel puts a pot of water on the stove to boil and remembers when his teacher taught the class about convection, which is fluid movement driven by heat. samuel recalls that convection in the earth’s mantle involves the movement of a. water currents. b. molten materials. c. tectonic plates. d. the lithosphere.

The answer is B. It is B because in if convection currents cooled down then the earth would die.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.

bru what tyep of qus is dis