Research a microbe that is not native to Pennsylvania - state its location, reservoirs, symptoms, and how it is transmitted to people. If it is not transmitted to people, describe how it is transmitted to non-human animals. Think about the environmental conditions in the area that your chosen organism is located and determine if that organism could possibly impact people (or non-human animals) if it was moved to Pennsylvania. If not, what would need to happen in order for that organism to have an impact?

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation: