Which is evidence that scientists use to support the big bang theory? a. the outer planets are mostly composed of hydrogen and helium. b. earth is the only planet with permanent liquid water on its surface. c. most orbits have an elliptical shape. d. most galaxies are moving away from each other.

D. Most galaxies are moving away from each other.

This is because The Big Bang supports the fact that the universe is growing. This also means that the universe was at one point the size of a grain of sand, and to this day would still be growing, supporting The Big Bang Theory.

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i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.

would not cooperate with each other voluntarily.