BIOLOGÍA Y GEOLOGÍA - BIOLOGY AND GEOLOGY

Ecosystem generally reach a state of balance naturally. Ecological sucession is the process of gradual changes in the biocenosis in order to reach that balance or maturity ( climax ).

Changes during puberty :   The male reproductive system: The female reproductive system: Fertilisation . The formation of a new individual: The ovarian and uterine cycles:  Embryonic development:

The locomotor system is made up of the muscles and the bones , it enables us to move around.