Shah did not trust the results of an experiment that she had read about, so she is conducting the experiment herself she
goes through the same set of steps and measures the effect of the amount of sugar on a single organism
which best describes what shah is doing?
replication
repetition
both repetition and replication
neither repetition nor replication

age range would be the answer

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

which

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

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements