A. atom
atoms are described to be the basic unit of a chemical element.
The first space is 20 and the second space is 40.078.
The same copies of the dna with the genes is distributed in all the cells of the body. This makes all the cells of the body to have the same genetic material. In lower organisms, dna replication is necessary for reproduction in order to have the same genes in the progeny.
C.there is no relationship between metabolic rate and body temperature.
I don’t think there is a limit in science because we didn’t discover even half of the ocean.
