Carbon dioxide, water vapors, methane, and ozone in the atmosphere result in a The greenhouse effect b Acid rain C Photoionization d Photodissociation​

What does it mean for a cell membrane to be selectively permable

Drag the tiles to the correct boxes to complete the pairs. match each cell organelle with its description.

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.