Water is found throughout the earth. It is comprised of hydrogen and oxygen atoms. Water changes into different physical states without losing basic elemental structure. Using the law of the conservation of matter, explain how water changes phases and how water obeys this law. Write your evaluation in standard paragraph format with four or
five complete sentences.

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.

cells spend most of their time in interphase