Assignment: the immune response exploration classify the following as either a specific or a nonspecific defense of the body's immune system. • skin • macrophages • bacteria • mucous • fever • b cells • t cells • antibodies

Which technology do environmental scientists use to track the movements or polar bears and other vulnerable populations? a) geographic information system(gis) b)environmental dna(edna) surveillance c) global positioning system(gps) d) unmanned aerial system (uas)