Which one the following activities can you perform without a permit? a. Working with an endangered species
b. Marking animals for research purposes
C. Capturing animals for relocation
d. Taking pictures of animals without disturbing them
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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.

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex