What hypothesis did redi make to test A cells can appear in sterile broth

B cells can develop from non-living things

C flies can come from rotting meat

D flies can only come from flies

Which source would best a historian understand the effect of the great chicago fire on families? a. a biography of a chicago family displaced by the fire b. a letter from a grandmother in new york to her family in chicago c. a newspaper editorial about families who were displaced d. an oral history dictated by an adolescent who fled the fire

To what extent did mary lease's concepts of justice, freedom, and equality agree with those of samuel gompers and emilio aguinaldo? how did they compare with those of the pinkertons at homestead?

Overpopulation puts severe stress on the environment because .