Answer:
Investigation: a searching inquiry for gathering detailed facts...
Experiment: an orderly procedure carried out with the goal of verifying , refuting or establishing the valitity of a hypothesis.... .
Explanation:
Sadanvama1979 GREETINGS
Cardiac muscles are striated.<span />
First, pre-messenger RNA is formed, with the involvement of RNA polymerase enzymes.
Answer:The second choice is best !
Explanation: