The doubling time of a type of bacteria is 20 minutes. if every bacterium reproduces, then after 20 minutes a population of 8 bacteria will have grown approximately to what size?
a. 64 bacteria
b. 16 bacteria
c. 10 bacteria
d. 28 bacteria

Which statement does lola need to correct, and why? a) statement 1 because spiral galaxies do not havearmsb) statement 2 because the bulges contain mostlyyoung red stars.c) statement 3 because the arms are made of mostlyyoung blue and blue-white stars.d) statement 4 because spirals galaxies contain littleto no dust.(c)