A) what is the difference between hearing the message through the "telephone" and through the air ?
b) according to the particulate nature of matter, molecules in air are much further apart than molecules in solids. use this model to explain why boy b head this difference
c) suggest some ways in which this experiment can be improve

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.

one part of the electromagnetic spectrum that arrives on earth as solar radiation from the sun is the visible spectrum. wavelengths of the visible spectrum combine to form what we refer to as

answer - d) ultraviolet radiation.

violet /   380–450 nm / 668–789 thz

violet is number 1 in the chart of visible light.

answer/// the nucleoid region contains dna; ///