Which of the vulture's five senses is most unusual and why?

Which of the rock examples below is most likely to be metamorphic

What does resonance result in? quieter sounds frequency amplitude louder sounds

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.