Earth’s inner core is
a.
a dense ball of solid metal.
b.
a layer of molten metal.
c.
a layer of hot rock.
d.
a layer of rock that forms earth’s outer skin.

the answer is c.

a layer of hot rock. because i learned this in science the other day . hope this helps .

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.