Chemical reactions can only occur when... 1)particles are able to separate
2) particles mix together
3) particles come together for a sufficient amount of time
4) particles come together with sufficient energy

4). Particles come together with sufficient energy.

Explanation:

According to the collision theory, Molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break. Molecules must collide with the proper orientation.

the answer is: they rebelled against saddam hussein’s rule.

kurds opposed saddam rule and wanted independence. kurds in the north and shiites in the south revolt against hussein.

for example, the halabja attack in 1988 conducted against the kurdish people by the iraqi regime under saddam hussein, where between 4000 people are killed and around 9000 are injured.

most likely he is cheating on you