Nombra los principios de la teoria celular

El concepto moderno de teoría celular se puede resumir en los siguientes principios: Todos los seres vivos están formados por células, bacterias y otro tipo de organismos, o por sus productos de secreción. ... Cada célula es un sistema abierto único e irrepetible, que intercambia materia y energía con su medio.

Explanation:

espero y te ayude

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.