Answer:
Water towers were needed to move water safely to the 7th floor and above. Although they looks like remnants of the past, they are still very much in use today. Using gravity to help supply the water pressure, water is fed to pipes throughout the building, providing water for everyday use like showers and drinking, as well as extinguishing a fire.
Explanation:
Answer:this is what I remember
Explanation: the upper class is wealthy middle is people who have average jobs and money and working class is people who are forced to work
sorry if I got it wrong that’s what I remember
I believe the answer is: independent variable
Independent variable is the type of variables which would be influenced by the control group that handled by the researchers. In every research Independent variable represent the things that the researchers want to measures through correlation with other factors.
