Which scientists have contributed to our knowledge of earth's age? geologists chemists physicists biologists astronomers

18a

step-by-step explanation:

simply because it is. it's the highest common factor

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i