What releases more hydrogen ions in solution, acids or bases?

Answer is acids

Explanation:

Acids

Acids are molecules that can split apart in water and release hydrogen ions. A common example is hydrochloric acid (HCl). When HCl is added to water, it splits apart into H(+) and Cl(-), increasing the number of hydrogen ions in the water–HCl solution.

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements