Answer:
observation or experience
Explanation:
Empirical method is a study that uses indirect or direct observations in order to gain some knowledge. It uses empirical evidences-information that are collected through observation or experience.
Theory that is tested by empirical method involves the use of objective, that is observed, highly controlled and replicable.
Answer:do not use Gene invetro therapy with the RNA factor.It is looking like a crossthread on a bolt not able to unravel .
Explanation:
RNA polymerase is the enzyme that connects and proofreads them.