Holly has planted a garden in her backyard, but the garden will not grow. after doing some research, holly has constructed a hypothesis. she thinks her garden will not grow because the soil does not have enough potassium. holly adds potassium to the soil around half of her plants and does nothing to the remaining half. her hypothesis seems to be supported. the plants with additional potassium grew taller and fuller than the plants without potassium. which of these steps of the scientific method should she take next?

Whenever diploid populations are in hardy-weinberg equilibrium at a particular locus a) the allele's frequency should not change from one generation to the next, but its representation in homozygous and heterozygous genotypes may change. b) natural selection, gene flow, and genetic drift are acting equally to change an allele's frequency. c) this means that, at this locus, two alleles are present in equal proportions. d) the population itself is not evolving, but individuals within the population may be evolving.