A rock sample contains 14.5 g of the parent Nickel-63 and the remaining 43.5 g has decayed into its daughter element. How old is the rock?

answerwestern plateau,     central lowlands,     great dividing range;

while the heads of the phospholipid structure attract water, the tails are hydrophobic. the model shows how the hydrophilic section folds around the fluid molecules to bring them into the cell so they don’t need to pass through the hydrophobic tails.