The first terrestrial vertebrates (with an amphibian life cycle) are represented by fossils that are late in age.

Which mechanism of transport takes place when solute particles move from a region of high concentration to a region of low concentration? active diffusion isotonic osmosis

Which of these is one of the nitrogenous bases in dna? a. proline b. leucine c. glycine d. thymine

Which process the first step in making a protein from dna intrsuction