Avirus?
a). contains rna and dna in a protein coat.
b). is surrounded by a nucleic acid envelope.
c). contains rna or dna in a protein coat.
d). consists of a protein surrounded by a nucleic acid coat.

Suppose you use three different scale to weigh a bag of organges. one scale says the nag weighs 2.1 lb, and third says it weighs 2.1 lb. the actual weight of the bag of organges is 2.153 lb. which of the following best decribes these results?