You are on a field trip and are recording the amount of mass in a volume of water. what are you measuring? a) the concentration of bacteria in seawater b) the concentration of dissolved oxygen in seawater c) the concentration of salt in seawater d) the density of seawater

The first amino acid of a new polypeptide chain is

Which is one example of a phenotypic change that is not genetic

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers