Which statement is true about the cells in multicell organisms?

a) they can all turn into the same kind of cell needed

b) they are all identical

c) they are prokaryotic cells

d) they usually have certain special functions

d They usually have certain special functions

Explanation:

a) They can all turn into the same kind of cell needed - this is false. Cells in a multi cell organism such as humans cannot turn to any type of cell, this functionality is called pluripotency, and only exists in specialised cells called stem cells. These cells are present early in development, and in some tissues where cells are replaced frequently, like the cells of the gut.

b) They are all identical  - this is false. Although they all carry the same genetic information, the cells in a multicell organism are usually very different, carrying out different functions. E.g. the cells of the skin are very different from the cells of the blood.

c) They are prokaryotic cells  - this is false. All prokaryotic cells are single celled organisms, only eukaryotic cells can form part of multi cell organisms

d) They usually have certain special functions - this is true. Cells in a multicell organism usually perform different functions in order to contribute to the entire organism. For example, the function of the cells in the heart is very different from the function of the cells in the brain.

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.

very