The role of active cytotoxic T cells is to attack . a. body cells that have been infected b. extracellular viruses and bacteria circulating c. antibodies circulating proteins d. complement proteins

Fossils can only be formed when? if mud, silt or tar is in the area to preserve the fossil ierosion does not occur and allows the fossil to form oxygen and microorganisms cannot decay the bones the area is dry and does not contain mud or silt

Anne, an intern in a microbiology lab, was observing the characteristics of various specimens of protists. match each specimen to the category of protist to which it belongs.

Which locations on the map are low-pressure areas? a b c d e