Scientists have long struggled with the question of whether viruses are living or nonliving. which of the following is the best explanation why they are considered nonliving?

a) they can cause illness
b) they lack a nucleus
c) they are not cells
d) they reproduce asexually

Asmall number of finches are removed randomly from the wild and placed in a protected bird area. they are given as much food as they need and have plenty of space. why would natural selection not occur in this population? a. there is no reason for genetic mutation to occur. b. the birds compete for limited resources, c. the population has not reached carrying capacity. d. there is no genetic variation in the finches.

The location of the stomach is the diaprham

Hershey and chase confirmed that dna, not protein, was the genetic material. how do the results of their two experiments support this conclusion?