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Fighting disease.
Scales benefit snakes by protecting their bodies when they slither.
you have armor protecting your body and shaping your body
by helping and protecting us and our environment.
If the test is a success, both will benefit (scientists->money and tested human->money or anything that will help them) but if the test if a failure, then only the scientists benefit from it (knowledge) [for the tested human->possible chance for disorders, nothing, or death]
"It will help find the genes responsible for many diseases."
it helps them study poo a bit more
They don't know so it should be used only if the potential benefit justifies the potential risk to the fetus. Speak to your doctor.
The risk analysis shows that the potential for benefit outweighs the potential for loss. In other words, it is worth the risk.
The scientist uses specialized training to help solve problems faced by society.
Pain serves to alert a person to potential or actual damage to the body.
They are actually both the same in aspect, protecting and assuring the benefit of home-ownership of an individual to a property.