yes
No, explosives typically do not contain sulfuric acid. Explosives are usually composed of chemicals that rapidly release energy when ignited or detonated, such as nitroglycerin or TNT. Sulfuric acid is a strong acid that is not commonly found in explosives.
No, explosives cannot be made from urine. Urine does not contain the necessary chemicals or properties to produce explosives.
Some do, some don't. It depends on the specific explosive.
TNT or dynamite which contain nitroglycerin
They may contain explosives
The smallest galaxy - a dwarf galaxy - will contain stars upwards of 30 billion stars. You are thinking of an open cluster, which as the name suggests, is a cluster of stars, not a galaxy. An open cluster is a group of up to a few thousand stars.
Typically, a Cluster Bomb.
Typically, a Cluster Bomb.
Tone Cluster
tone cluster APEX
Cluster Bomblet Units (CBUs)
CBU