Answer:
based on a tested hypothesis
Explanation:
Laws are generally <u>based on tested hypotheses</u>.
Theories are first derived from repeatedly tested and proven hypotheses. Scientific laws are derived from theories that have been proven to be true over a wide range of phenomenon. Hence, laws are overwhelmingly proven facts that <u>cannot be changed</u>.
Scientific laws are <u>internally consistent</u>, compatible with evidence, and are <u>testable against a wide range of phenomenon</u>. However, <u>they can be reviewed</u> as more evidences emerge that have not been known before.
There are so many examples for that in different areas, like biology experiment carried out in our lab recently.
Here's one linhttps://www.creative-biogene.com/support/Lentiviral-Vectors-the-Application-for-CAR-T-Therapies
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Question :
If Rh factor is present in blood???
Answer :
The Rh factor is a protein that can be found on the surface of red blood cells. If your blood cells have this protein, you are Rh positive. If your blood cells do not have this protein, you are Rh negative. During pregnancy, problems can occur if you are Rh negative and your fetus is Rh positive.