None of the above is correct.
1. Chemical sedimentary rocks
2. Chemical sedimentary rocks are formed from sediments created by rocks being broken down into small particles (clasts).
3. Chemical sedimentary rocks are formed from sediments created by dissolved chemicals being precipitated out of the water they're dissolved in.
Arranged in layers of rock in the ground
Meiosis because it creates haploid cells or sex cells with only half of the normal number of chromosomes so that when the two sex cells are joined you get the normal number of chromosomes in your new organism.