Sickle cell anemia is a genetic disorder obtained from a. exposure to large quantities of toxic chemicals b. a skin mutation caused by ultraviolet light c. inheriting a mutation in the dna sequence of a particular gene. d. exposure to a blood-related pathogen.

explanation:

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.

in addition to spreading humanist ideas, erasmus has contributed to criticism of corruption in the church.