A student leaves an air-conditioned room and goes outdoors where the temperature is over 100 °F. Which of these BEST describes how the student's body
maintains homeostasis?
A - skin begins to sweat
B - muscles increase activity
C - blood vessels widen
D - lungs breathe faster

As a small change in a person's dna can cause a genetic disorder

Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi

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.