A: Scientific knowledge can be revised with time.
The control group outs the one that you don't change. The reason you don't change it is because you use it as a comparison with the other groups.
Answer:
Choloroplast:It is a type of plastid and is found plant cells that contains chlorophyll which is necessary for photosynthesis.
Organelle:Organelles are specialized structures with cells that perform specialized functions.
Hope that helps
Answer:
Explanation:
If enough evidence accumulates to support a hypothesis, it moves to the next step — known as a theory — in the scientific method and becomes accepted as a valid explanation of a phenomenon. Tanner further explained that a scientific theory is the framework for observations and facts.
