Answer: The mass number is the sum of the numbers of protons and neutrons present in the nucleus of an atom.
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<span>Erosion is the act in which the earth is broken down by water, ice, or wind. It breaks bits of earth (rock or dirt) to form hills and mountains.
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Volume. Gases and liquids are typically measured in milliliters (mL) or cubic centimeters (cm^3) - both of which are equivalent (1 mL = 1 cm^3).
Winter because the winter solstice is the point when the sun is at its lowest making it the coldest day of the year
