6. Which of the following fossils is an example of a body fossil? ~ Dinosaur Foot Print's

~ Raccon excrement

~ The skull of a cow

~ A piece of fruit containing teeth mark's

cow skull

Explanation:

answer; i believe the correct answer is (anemia);

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.