What is the relationship between exposure to a virus and developing an immunity to it?

Ajourney with my father adapted from my reminiscences by sir rabindranath tagore probably in order to teach me to be careful, my father placed a little small change in my charge and required me to keep an account of it. he also entrusted me with the duty of winding his valuable gold watch for him. he overlooked the risk of damage in his desire to train me to a sense of responsibility. when we went out together for our morning walk, he would ask me to give alms to any beggars we came across. but i never could render him a proper account at the end of it. one day, my balance was larger than the account warranted. "i really must make you my cashier," observed my father. "money seems to have a way of growing in your hands! " that watch of his i wound up with such indefatigable1 zeal that it had very soon to be sent to the watchmaker's in calcutta. i am reminded of the time when, later in life, i was appointed to manage the estate and had to lay before my father, owing to his failing eyesight, a statement of accounts on the second or third of every month. i had first to read out the totals under each head, and if he had any doubts on any point, he would ask for the details. if i made any attempt to slur over or keep out of sight any item which i feared he would not like, it was sure to come out. so, these first few days of the month were very anxious ones for me. as i have said, my father had the habit of keeping everything clearly before his mind—whether figures of accounts, or ceremonial arrangements, or additions or alterations to property. he had never seen the new assembly hall built at bolpur, and yet, he was familiar with every detail of it from questioning those who came to see him after a visit to bolpur. he had an extraordinary memory, and when once he got hold of a fact, it never escaped him. my father asked me to copy the favourite verses, with their translation, from the book he liked reading every day. at home, i had been a boy of no account. here, when these important functions were entrusted to me, i felt the glory of the situation. 1. tireless 7 how does the narrator support the idea that his father keeps everything clearly before his mind? a. by giving the example of his father's response when his account did not tally with the money that he had in hand b. by mentioning that his father was interested in everything that happened around him c. by giving the example of his father knowing every detail of the new assembly hall at bolpur d. by mentioning that his father had marked his favorite verses from his favorite book

Read the passage. excerpt from "why equal pay is worth fighting for" by senator elizabeth warren, april 17, 2014 i honestly can't believe that we're still arguing over equal pay in 2014. when i started teaching elementary school after college, the public school district didn't hide the fact that it had two pay scales: one for men and one for women. women have made incredible strides since then. but 40 years later, we're still debating equal pay for equal work. women today still earn only 77 cents for every dollar a man earns, and they're taking a hit in nearly every occupation. bloomberg analyzed census data and found that median earnings for women were lower than those for men in 264 of 265 major occupation categories. in 99.6 percent of occupations, men get paid more than women. that's not an accident; that's discrimination. the effects of this discrimination are real, and they are long lasting. today, more young women go to college than men, but unequal pay makes it harder for them to pay back student loans. pay inequality also means a tougher retirement for women. . for middle-class families today, it usually takes two incomes to get by, and many families depend as much on mom's salary as they do on dad's, if not more. women are the main breadwinners, or joint breadwinners, in two-thirds of the families across the country, and pay discrimination makes it that much harder for these families to stay afloat. women are ready to fight back against pay discrimination, but it's not easy. today, a woman can get fired for asking the guy across the hall how much money he makes. here in the senate, sen. barbara mikulski (d-md.) introduced the paycheck fairness act to give women the tools to combat wage discrimination. it would ensure that salary differences have something to do with the actual job that they are doing, and not just because they are women. senator warren states that the effects of pay discrimination are long-lasting. is this a valid argument supported by accurate evidence? no; warren weakens her point by claiming that the paycheck fairness act would "give women the tools to combat wage discrimination." yes; warren supports her point by noting, "for middle-class families today, it usually takes two incomes to get by." yes; warren supports her point by noting, "pay inequality also means a tougher retirement for women." no; warren weakens her point by noting, "today, a woman can get fired for asking the guy across the hall how much money he makes."

According to warren in the brown opinion, how did conditions change between the time the fourteenth amendment was adopted and the time the supreme court considered brown v. board of education?