is a process of nuclear division which reduces the number of chromosomes per cell from 2 sets to 1 set.

Meiosis

Explanation:

Living cells constantly undergo division. Meiosis is one of the types of cellular division that is employed by sexually-reproducing organisms to produce gametes. Meiotic division involves the production of daughter cells (gametes) with a reduced chromosomal number (by half).

Meiosis occurs in a two-step division process; meiosis I and II. In meiosis I, homologous chromosomes (similar but non-identical chromosomes received from each parent) are separated. This reduces the diploid number (Two complete set of chromosomes, 2n) of the cell to haploid (one set of chromosomes, n). In meiosis II, sister chromatids (replicated chromosome) get separated.

not sure if this is what you'r looking for eubacteria and archaebacteria

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.