after malaria is cured, the frequency of the hbs allele should decrease in regions with lots of mosquitoes because

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

the dali lama

explanation:

he is quite fat and then we can talk about the details