Which part of a watershed is a lake or even an ocean where the water ends up

River or Stream

Explanation:

The watershed refers to that particular area in which the rainfall occurs and the water is collected and allowed to flow into a common and regular outlet. This outlet is mostly the rivers that further flows and adds to the seas and oceans. Some of the factors that affects the watershed are temperature, pressure, wind, gravity and amount of precipitation.

So, the part of the watershed where the water ends up is a river or a stream.

well

explanation:

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.