A physical change is he starts to grow hair or he gets taller
Answer:
A heart transplant is a surgery in which doctors remove a person's sick heart and replace it with a healthy donor heart. ... They choose to donate the organs because they want to help someone else who is sick.
Here's another example:
Mayo Clinic is the largest integrated transplant provider in the United States. Mayo Clinic has pre-eminent adult and pediatric transplant programs, offering heart, liver, kidney, pancreas, lung, hand, face, and blood and bone marrow transplant services.
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what kind of people is these
Answer:
According to the research methodology, a set of observation leads to the formulation of a hypothesis. However, a hypothesis can be formulated through literature research or by looking into real world's problems. The hypothesis is then tested using a strict research criteria, and if proven, it becomes a theory.
In this case, a researcher made a <u>hypothesis that people who exercise will do better on a specific test as compared to the people who don't exercise</u>. This hypothesis is based on his literature review and should be tested. There are no conditions given for the test, nevertheless, it doesn't provide enough information to be called as a theory or scientific law.