some europeans view immigrants as a threat because

they take employment away from "natives."
they reconstruct cities
they live in the country
they increase the threat of terrorism
they dilute european culture
they create negative population growth

- They dilute European culture

- They increase the threat of terrorism

- They take jobs from ''natives''

Hope this is right .-.

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.

b is dominant over the allele for the white fur.