Kcse Online Revision Biology NotesNotes

Kcse Online Revision Biology NotesNotes Form 1 . 2 ... materials resulting from chemical reactions within the cells. These harmful waste products of metabolism maybe toxic to the body if they are left to accumulate in the cells of the living things e) Growth and Development Growth refers to an irreversible increase in size and mass while development refers to the irreversible change in ... ................
................