The greater the mass of an object, the greater its gravitational pull on
other objects around it. Which of the following exerts the greatest
gravitational pull? *
O
an asteroid
Earth
O
the Moon
O
the Sun

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.

explanation:

okay now i don't know this but for the pints nothing else to say bye