What do the body plans of butterflies, dogs, and humans have in common? a) They are all bilaterally symmetrical.
b) They are all radially symmetrical.
c) They are all asymmetrical.
d) They are all primates.

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.

i'd say that the moon rock is about 2.2 billion years old.

what are the awnser choices? i mean, without choices, it is an incompleat