1 the set of exogenic (physical, chemical and biological) processes that alter the physical and chemical state of rocks at or near the earth's surface.  intensity of most weathering decreases with depth, because variations in temperature and moistures decrease with depth.
A gene is a segment of nucleic acid that contains the information necessary to produce a functional product, usually a protein. Genes consist of a long strand of DNA (RNA in some viruses) that contains a promoter, which controls the activity of a gene, and a coding sequence, which determines what the gene produces.
A nucleus of a cell contains chromosomes that carry genetic  information. Chromosomes are made from long, coiled molecules of  DNA. A gene is a shorter region of DNA that ca â¦ rries the genetic  code for a particular characteristic.