1. what kind of cells have 46 chromosomes (23 pairs) ?
2. what types of cells are sex cells?
3.what is happening to the chromosome during inversion, duplication and deletion?

one centimetre is equal to 0.01 metres

ya the other dude is right

the wetland preservation movement began in the u.s. in earnest with the clean water act (cwa) of 1972. although not specifically written to protect wetlands, the cwa is comprised of a series of regulations designed to prevent pollutants from contaminating u.s. waters.