The answer is c. <span>require evidence of effectiveness.
</span>Medication are usually prescribe by doctors and can be sold over the counter, however it doesn't mean that this medication is as effective in you just like others.
Because they are responsible for controlling genetic details or information which is in our DNA .
The most unusual thing about the way water changes from one state to another is that its liquid state is denser than its solid state, so increased pressure actually encourages ice to melt. This is unlike most substances, in which increased pressure encourages solidification because the solid state is the most dense.
Poor hygiene has the most effect on the immune system