The atomic mass or mass number of an atom is written as superscripts attached to the symbol of that element.
<h3>Atomic mass or mass number</h3>
- The atomic mass or mass number of an atom of an element is the sum of the number of protons and neutrons in the nucleus of the atom.
The atomic mass or mass number of an atom is usually written as superscripts attached to the symbol of that element.
For example, given an element X, the atomic mass or mass number can be shown as follows: 
where a = atomic number
b = atomic mass/mass number
Therefore, the atomic mass or mass number of an atom is written as superscripts attached to the symbol of that element.
Learn more about atomic mass at: brainly.com/question/338808
D, because both A and C are correct.
The heating of the troposphere<span> is </span>caused<span> by convection currents. Convection currents are created when the sun warms the air currents at the planet's equator to a greater degree than it does at the planet's poles.
Hope this helps you, and happy studying~!
~Mistermistyeyed.</span>
<span>simple and complex
"complete and incomplete" are terms used for proteins in nutrition. "macro and micro" are terms used for nutrients in nutrition. And " saturated and unsaturated are terms used for fats also in nutrition.
The difference between simple and complex carbohydrates is related to the way they are digested. Simple carbohydrates are quickly absorbed and ready to be used, while complex carbohydrates take longer to be absorbed and supply energy through a longer period of time.</span>
