Hypothesize why parts of a plant, such as the leaves, are green, but other parts, such as the roots, are not. use scientific reasoning to support your hypothesis.

Leaves are green because they contain a green pigment.

In the parlance of science, a hypothesis is a tentative explanation which must be testable.

In this case, i have hypothesized that the reason for the green color of leaves is the presence of a green pigment.

I must now subject the leaves, root and back of the tree to laboratory experiments to see if this pigment can only be extracted from the leaves.

If indeed, this pigment can only be extracted from plant leaves then the hypothesis is found to be true.

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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.