Answer: The correct answer is : Dimensional analysis is a very useful tool for solving conversion problems in which a measurement with one unit is changed to an equivalent measurement with another unit. This technique is also called the Label Factor Method or Unit Factor Method.
The agency that distributes blood is : World health organization
The world Health Organizations existed to solve various problems concerning the health of humanities.
Distribution of blood will helped various problems such as blood transfusion or sampling to create a vaccine
hope this helps
A person walking because there moving which is mechanical energy.
It depends what the choices are unless there is not specific choices.
