The upper class consisted of the royal family, rich landowners, government officials, important priests and army officers, and doctors. The middle class was made up chiefly of merchants, manufacturers, and artisans. The lower class, the largest class by far, consisted of unskilled labourers.
Answer:
A.it prevent some UV rays
Answer:
Para que ningún acto o actividad que se lleve a cabo mientras el tratado se halle en vigencia constituirá fundamento para hacer valer, apoyar o negar una reclamación de soberanía territorial en la Antártida, ni para crear derechos de soberanía en esa región.
Explanation:
It's an elastic wave in the earth produced by an earthquake or other means. hope it helps!