Answer:
Number of protons plus the number of neutrons.
Explanation:
Most of an atom's mass is in its nucleus. The nucleus is made up of protons and neutrons.
Scientists<span> are people who use research and experiments to learn more about the natural world. </span>Scientists<span> use scientific methods to derive knowledge systematically, performing experiments over and over to ensure that their conclusions are valid and accurate.</span>
The answer is A:<span> Metamorphic rocks</span><span> may display two different grain sizes.</span> :)
We breathe in air, not straight oxygen. Attached is a pie chart showing roughly what percentage of what is in the air we breathe
an increase in atmospheric carbon dioxide
Answer: D
