Where did all the elements other than hydrogen and helium come from

They came from cosmic ray spallation. In this process, cosmic rays impact with the nuclei of larger heavier elements and shatter their nuclei so that lighter nuclei are created such as lithium, beryllium, and boron.

Explanation:

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They were made in stars and other space objects.

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answer; /// i believe that the correct answer is( it left behind rich

increases in demand are shown by a shift to the right in the demand curve. this could be caused by a number of factors, including a rise in income, a rise in the price of a substitute or a fall in the price of a complement.

which the answer is:

b