Answer:
The sound of baby is high pitched and the sound of adults are low pitched .
Explanation:
Observation: You saw/ observed something and you are stating that.
Inference: You are predicting something to be true. If so and so, then this will occur.
The correct option is A.
In the nucleus of an atom, the nuclear force, which bind the protons together is very strong and powerful at short distances. The repulsive electrostatic force, which exist between the protons is comparatively weaker. But as the distance of the atom shells increases, the nuclear force becomes weaker while the electrostatic force becomes stronger.<span />
Solid
Solids have a definite shape and size (volume)
Liquids have a definite size but no definite shape
Gasses have no definite shape or size