What was the purpose of Miller and Urey's experiment?
A. To determine where genetic information is stored in prokaryotes
B. To measure the number of biological molecules on Earth
C. To find out if archaea and eukaryotes had a common ancestor
D. To see if biological compounds could form spontaneously on early
Earth

D. To see if biological compounds could form spontaneously on early Earth

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explanation:

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ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called