Carlos listed some advantages and disadvantages of using nonrenewable resources. Which best describes Carlos’s error?

Coal is not plentiful anywhere.
Coal generates very little energy.
Ores do not make many useful products.
Ores must be processed.

well in order to answer this question you have to provide more information < 3

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.