Answer:
Mass and density
Explanation:
Density of an object is defined as its mass per unit volume. Mathematically, the relation is given by :

m = mass and V = volume
If we know the density of the Eraser and its mass, we can easily find its volume. Hence, the two tools are mass and density.
Read this article if you can http://depts.washington.edu/depress/
Answer:
The Nuclear Test Ban Treaty.
Explanation: This treaty was signed in 1963, as representatives of the United States, Soviet Union and Great Britain signed the Limited Nuclear Test Ban Treaty, which prohibited the testing of nuclear weapons in outer space, underwater or in the atmosphere.
The International Criminal Court responded to the crisis in Darfur by: <span>issuing a warrant for the arrest of the Sudanese president
The international criminal court issue a warrant to arrest Sudanese President </span><span>Omar Hassan al-Bashir with the accusation of crime against humanity. Omar Hassan al-Bashir was proven to give various type of aids to the militant that conduct inhumane violence against other ethnic and religion..</span>