Calendars were developed for many reasons. which of the following did not prompt the development of a calendar? a. farmers needed to know when to plant their crops. b. people needed to be able to predict the annual floods. c. emperors needed a way to control their subjects. d. priests wanted to keep track of special days.

Ascientist performs an experiment where she measures the mass of a piece of metal, pours acid onto the metal, washes the metal, and then re-measures the mass of the metal. the scientist repeats the experiment several times, each time increasing the amount of acid used. the dependent variable in the experiment is the: initial mass of the metal final mass of the metal amount of acid used washing the metal

In 150 to 200 words, use evidence to compare the ideas of the abolition of the slave trade and the abolition of slavery

6. how are goods and services distributed in a free market system?