The united states has a greater number of pull factors than it has push factors, which is why it is the nation with the highest immigration rate. a. true b. false

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.

What is atp and what purpose does it serve in the human body?

Experiment for carbon dioxide is essential for the process of photosynthesis and to prove that oxygen is produced during photosynthesis a.write laboratory report about the above experiment b.use the following format •introduction •aparatus •method •discussion •conclusion