12 and 24
a. GCF
b. LCM​

a.12= 2^2*3

24= 2^3*3

GCF= smallest power of each common factor

GCF= 2^2*3

GCF= 12

b. 12= 2^2*3

24= 2^3*3

LCM = greatest power of each factor involved

LCM= 2^3*3

LCM= 24

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

false

because it does not have the potential to be entirely used up