Safety is essential all the time right from Womb to Tomb. The moment you are conceived by the mother, safety becomes necessary. In the womb you do not require Oxygen, water, food; but if your safety is not there, you can not take birth in this world. From birth to death all the time safety is required - day and night - throughout the life. After death safety is required for the dead body till it is cremated. Only after cremation you go to dust and safety is no longer required for yo.
It does not matter whether it is preschool or any other activity, health and safety are necessary because no one wants to become sick or be injured, or to have that happen to their children.
To become a body piercer, it is necessary to obtain an internship with a professional and take certain safety and sanitation courses.
To protect you.
No safety is necessary everywhere...the streets, your home, car driving.... elaborate on the question
To protect you.
they called out the military when necessary
The necessary safety precautions when conducting an experiment depend on what is done during the experiment and where it is done.
Laws are necessary because some people are thoughtless or greedy and do only what they want without thinking of the health and safety of others.
One may become a health and safety consultant if they go to University or college. They may study Health and Safety and earn a degree. After having graduated they might become a health and safety consultant for a company.
It is necessary because without the safety rules, an experiment could go wrong and cause damage or seriously injure someone.
When did treaties become necessary?
To become a safety expert, obtain a Masters or a Doctoral degree in Safety or Safety Engineering, or spend several decades working in safety-related positions that do not require a degree but that provide extensive, wide-ranging experience in the Safety field.