there are so many fireworks that they can not count them
There are thousands, depending upon how you classify them. The simplest division is Igneous/Plutonic, Sedimentary, and Metamorphic. Beyond this you may classify them as carbonates, sulphates and so...
There about 1,300 species worldwide, with 13 species native to the US.
a lot you have no idea!
3 main, not sure if there's other devices. (seismoscope, seismometer, ???)
There are some 25 species of Chipmunk. Use the link below to begin investigating.
Types of Christmas Trees
Where Have All the Leaders Gone
Different Kinds Of Alcholism Addiction Treatments
How to Cope with Different Kissers