You answer your phone at home several times a day, but it is always a telemaker. finally you stop answering it. this is an example of

Spam calls or violations of the Do Not Call rule.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

population. population is the number of people or animals in a particular place. an example of population is over eight million people living in new york city.

here is your answer hope i .