for a couple of decades, biologists knew the nucleus contained dna and proteins. the prevailing opinion was that the genetic material was proteins, and not dna. the reason for this belief was that proteins are more complex than dna. what was the basis of this thinking?

Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. he uses the new cleaner on one half of the shower tiles and his old cleaner on the other half. identify the independent and dependent variables in this experiment. enter your answer in the space provided.

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?

Which organism in this food web is an omnivore?coati