Is a plain the result of constructive forces, destructive forces, or both? A plain is a result of both constructive and destructive forces.

Crustal deformation raises the land up, and weathering then flattens the raised area out.

A plain is a result of both constructive and destructive forces. Weathering keeps the plain flat over time, and deposition brings more soil and sediments in.

A plain is a result of constructive forces. Deposition brings in soil and sediments that spread out in a large flat area and build up large flat land.

A plain is a result of destructive forces. Weathering evenly wears the land down over time, which keeps the area wide and flat.

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

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.

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