Why was letting sea water evaporate in the sun not efficient, or good, method for obtaining salt?

Why is the supreme court decision in roe v. wade so controversial.

Define what the expropriation without compensation's and what does the freedom charter says about it

Who introduced arabic numerals to italy, which make bookkeeping possible? a. brunelleschi b. cosimo de medici c. fibonacci d. gregory xi e. giovanni de bicci de medici