How can you tell the difference between two clear liquids

Pastoral farming is best described as a. a method of raising livestock and moving herds b. an african method of agriculture c. a method of cultivating crops on poor soils d. a common method of desert farming select the best answer from the choices provided a b c d

What best discribes the relationship between wavelength and frequency in a electromagnetic wave

What is the percent by mass of magnesium sulfate in mgso4.7h2o