Which condition of volcanic magma would mostly like cause an explosive, destructive eruption? select one: a. thick magma with a high level of gases b. thin magma with low gas levels c. thin magma with a high elevation volcanic mountain

Option A; thick magma with a high level of gases

As the magma increases in temperature, it rises up and gases come out as bubbles on the surface. The pressure of these bubbles is so high that it can exert good amount of pressure on the solid rock surrounding it. This pressure also makes the eruption so violent and explosive. Also magma gets thick due to presence of more silica. So both density and high gas pressure results in an explosive volcanic eruption.

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.