How are nucleic acids classified?
Whether viruses contain DNA
Whether the viruses contain RNA
Whether the nucleic acid is single or double stranded
Whether the nucleic acid is linear or circular
All of the above

the index of refraction of the second medium is higher. i just took the test trust me !

but there is no

i guess you forgot putting it.

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.