9/-13, 7/-12 ( which is greater?)​

The earth is composed of three different chemical layers: core, mantle and crust. the formation of these layers was from a process called

The first atomic explosion was detonated in the desert north of alamogordo, new mexico, on july 16, 1945. what percentage of the strontium-90 ( yr) originally produced by that explosion still remains as of july 16, 2016?

Weather conditions in which location would be most interest to a person predicting the next day's weather for new york state