What process that occurred in the Midwestern United States in the 1930s is now occurring in the Sahel region of Africa, south of the Sahara Desert? Industrial pollution

Radioactive soil

Over fertilization of streams

Dust storms and desertification

Each pair of clay balls represents to planetesimals if each plane test molluscum pound of the same material and is separated by the same distance which pair experiences the greatest gravitational attraction

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.