The answer is B. You're welcome.
* mandate - a requirement
* Separate but not equal - legal doctrine that permitted racial segregation
* segregation- the practice of maintaining separate facilities for different races
* desegregation - the process of intergratimg facilities that had been separated by race
* affirmative action - a policy promoting greater minority inclusion
Explanation:
workers banding together against big business to demand better pay and working condition(low wages,long workdays,no vacation,and unsafe work place) (ANSWER B )this was the the reason why labor union grew up in order to protect the workers interest. There was a wide gap between employers and skilled workers which needed to be filled therefore workers developed union and collective bargain with their employers .
Yes, you are correct about change of water into water vapours , also you will think it is doesn't have any importance and is waste for the plant energy. But it is a “NECESSARY EVIL” as it cools down the plant , transport water,minerals and also Plant hormones,etc. May you got your answer
