Which of the following layers is farthest from earth's center

answer:

explanation:

the layer of the atmosphere closest to the earth is the troposphere. it begins at the surface of the earth and extends out to about 4 to 12 miles (6 to 20 km). this layer is known as the lower atmosphere. it's where weather happens and contains the air humans breathe.

answer:

troposphere.

explanation:

a chair, a bed, and a toothbrush

explanation:

i was told this before by a teacher, so yeah

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.