Explique por que razão no interior de grutas estão criadas condições ambientais para a formação de calcários de precipitação

Witch theory suggests all living things are made up of cell or cells

Which of th following is needed for cellular respiration to occur

There are few cells in the body that do not undergo mitosis: most somatic cells divide regularly, some more than others. take for example the cells that line the digestive tract. these cells must be frequently replaced because they are constantly eroded by the movement of food through the tract. what mechanism(s) is/are in place to ensure that these cells are exact copies of the mother cell