The information of an energy pyramid reveals that for human food choices,

a. it is more expensive and less efficient to get most of your dietary calories from grains.
b. consumers at lower trophic levels do not have as much energy and biomass as consumers at higher trophic levels.
c. consumers at higher trophic levels are usually more abundant than consumers at lower trophic levels.
d. it is more expensive and less efficient to get most of your dietary calories from meats.

14) 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.