Which of the following is an example of positive feedback? abscisic acid (aba) in plants slows bud growth in cold temperatures. an increase in ethylene gas causes fruits to ripen more quickly. taking a tranquilizer slows the speed of signal transmission in neurons. panting in dogs increases the amount of cool air in nasal passages and lowers body temperature

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

If you are in a chronic state of anxiety but also suffer from moment of sudden, intense fear you are problably suffering. from

Building glycogen from glucose molecules is an example of what