What is the primary cause of groundwater shortage? A)
pollution
B)
use exceeding the rate of replenishment
C)
lack of precipitation
D)
all of the above

D. All of the above

Explanation:

Pollution makes ground water un-usable

Rate of Replenishment causes droughts, at the rate we use it.

Lack of precipitation results in little rainfall, making no groundwater

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.

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides