The shape of the beaks of Darwin's finches, industrial melanism, and sickle-cell disease are often cited as examples of the process of leading to evolutionary change. Group of answer choices artificial selection natural selection coevolution

when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.

i think the answer is b.

a covalent bond, specfically triple bond

cell division is not regulated in tumor cells.