Please help and explain the answer

During the process of two rails or sides break apart and attract new nucleotide bases to form a new and complete strand.

2pomis which of the following would be a valid hypothesis for a scientific investigation about how transportation affects food security? alcannotatiord foods purchased from the local farmers market. o b. how does the distance a food travels affect its affordability? o e foods that travel great distances cost less than foods bought o d why do local farmers markets have food with such high prices?

What do all celular activities in living organisms use as a source of energy?