<h2>Hello!</h2>
The answer is: The mass number of an atom is obtained by totaling the number of protons and neutrons.
<h2>
Why?</h2>
The atomic mass can be calculated by the sum of the protons and neutron mass of an element.
We should not confuse the atomic mass with the relative atomic mass since the relative atomic mass of an element is the average mass of its particles/atoms compared to 1/12th the mass of a carbon-12 particle/atom.
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Answer:
they are on tectonic plates
Explanation:
none needed
1)A growing demand for energy source in these countries will affect the environment by the need of energy for the more energy used the more the remains of that energy spreads to the environment for example when your burning fuels for energy there will be a gas released and it will pollute the environment and spread to other places.
Explanation:
There are five main components of the long jump: the approach run, the last two strides, takeoff, action in the air, and landing. Speed in the run-up, or approach, and a high leap off the board are the fundamentals of success.