Answer:
the second option is correct
Explanation:
maybe I think b is correct
A; Scientific theories are made as explanations to the world around us. They do not have to be written in simple terms, they do not have to be equations (Theory of evolution) and they do not have to be accepted by all the scientists, as it would be impracticable. A successful theory is one that has been used to accurately foretell a future event.
Scientific theories provide results that are based on evidences that comes from research. These theories provide laws. But with more research sometimes certain results that comes from theories found not to be valid and some flaws are found that required to be removed. So that the theory required to be changed but only that theory provide the basis for the further research so it is never thrown away.
Answer:
Atomic Particles
Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge).