Answer:
I think the answers probably b
What would happen if M RNA were radio actively labeled instead of polypeptides is that instead of one seeing the DNA passing through all the molecular factories you will instead see just messenger RNA taking code and delivering it to Ribosome. This is mainly found in cytoplasm and Endoplasmic recticulums.
Most likely clay, silt and sand are to be found in samples of rocks.
Mutualism because both animals benefit. The Elephant gets relived from the parasites that are on it and the bird gets food.
