Question 23 The structure of nucleic acids, DNA and RNA, differ in that

A DNA's nucleotide sequence is single stranded, while RNA's nucleotide sequence is double stranded.

B
RNA's backbone is made up of phosphates, while DNA's backbone is made up of
nitrates.

С
DNA contains a nucleotide with thymine, while RNA contains a nucleotide with uracil.

D
RNA contains only three different nucleotides, while DNA contains four different nucleotides.

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.

some of your causes might be acidic rain or natural wildfires that cause the parks to be degraded

hope this any more questions i am here plz mark brainliest

answer: i cant find your answer. do u have another way i can answer it for you : )

explanation: