Which of the following allows for a cell to become specialized? ^^^ look at picture

In general, characteristics that an organism survive and reproduce become more common in a population over time. what mechanism of evolution cause this change?

The open ocean of any depth is called the

According to the rna world hypothesis, rna acted as the genetic material and catalyzed reactions in ancient cells. what conclusion can you draw from this?               a.  this implies that dna and proteins aren't essential in cells today.    b.  this implies that rna can catalyze any chemical reaction that enzymes catalyze.    c.  this implies that if a cell has a problem with its dna, its rna can compensate for the damaged dna.    d.  this implies that dna and proteins evolved after rna.