While a short-term memory lasts only about thirty seconds, it can become a long-term memory if you place value on that memory. Value that extends short-term memory includes all of the following except

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.

the backbone of the dna and rna compound is sugar phosphate.

multiplying and dividing the two decimals and the eqations by the same number of the overalls