. Malaria is a disease that is carried by mosquitoes and injected into a person’s bloodstream when they are bitten by the infected mosquito. At first people thought malaria was caused by breathing in the air around swamps. This seemed like a logical conclusion, since people who live near swamps were more likely to contract malaria than people in drier places. What tool could have provided evidence for a more accurate conclusion about the cause of malaria?

Which of the following selections is least useful for supporting the claim that states intentionally built unequal school systems? question 1 options: the supreme court ruling in plessy v. ferguson (1896) wrote into law that america had two separate societies: one black and one white. it was very clear by the mid-1900s that southern states had expertly built separate educational systems. these schools, however, were never equal. states with laws keeping schools segregated never gave equal amounts of money to their black and white schools. ten years after brown, fewer than 10 percent of southern public schools had integrated. some areas did not comply at all.