Under which of the following conditions are you most likely to fall sick when you are taking examinations when you have travelled by bus train or for 2 days when you are friend is suffering from measles why

i believe the answer is c

the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.

the alkaline earth metals (beryllium (be), magnesium (mg), calcium (ca), strontium (sr), barium (ba), and radium (ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. hopefully this ? i didn't fully understand the question