7. Where are the most reactive metals located on the periodic table? A. Periods 1 and 7
B. Groups 1 and 2
c. Groups 4 and 17
D. Periods 2 and 5

Agene pool: a) is the collection of all the alleles found in a single species b) is the collection of all the alleles found in a single population c) is the collection of all the chromosomes found in a single population d) is the collection of genes in a species that allow the individuals to swim