The water is able to leave in and out of the cells because there is a cell membrane splits the bilayer of tissue and then the water start leaving and coming back in again from the stage of osmosis.
Each group of three nucleotides encodes one amino acid. Since there are 64 combinations of 4 nucleotides taken three at a time there are 20 amino acids.
He went to the Galapagos Islands and studied different species of finches and plants that had adapted differently on the different islands.
Answer: B
Explanation: Adam Smith's theory of an invisible hand is a metaphor and therefore has nothing to do with a physical hand. In it self it's a theory that shows how in a free market economy, individuals with self-interest operating through a system of mutual interdependence, promotes the general benefit and good of society, mostly without any idea of the larger effect of their self-interested actions. A metaphorical hand that leads individuals to promote social interest by pursuing self-interest, option B, is therefore correct.
