When arab armies conquered iran, it was known as

turkey

the ottoman empire

farsi

persia

Nuclear experimentation is a major global issue that affects relationships between countries. describe why countries try to limit the testing of nuclear weapons.

Identify the youngest layer in the figure ( have to click one letter)

What is the radius of a circle whose equation is (x + 5)^2 + (y – 3)^2 = 42? 1. 2 units 2. 4 units 3 .8 units 4. 16 units