Which activity would require the use of your skeletal muscles?

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.

What are the responsibilities of the region of the brain highlighted below? =+= will rate brainiest =+=

Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above