Because you are taking things that don't belong to you without asking.
Explanation:
Nucleus : It is the control center of the cell as it controls all the activities of the cell and it is a round body which is generally present at the centre of the cell .. it contains chromosome and nucleolus .
Organelles : they are body which are present in the cytoplasm and do lots of activities for the cell .. example of organelles : lysosome , Golgi body etc .
DNA: it is functional part of the chromosome and contains information which helps in inheritance of characters from parents to the offspring.
Hope this will be helpful for you and plzzz mark my answer as brainlist ....
If you aren't checking yourself then you may have a problem. For example you could have testicular cancer and you wouldn't know without feeling an unusual bump in that area.
Its effects the nose, throat, and lungs, because a friend of mine had a respiratory infection, he had stuffy nose, sore throat and his lungs are now swollen
Hope this helps! :)
~Zain