Antibiotics added to livestock feed have been found to increase their growth rate, reduce incidence of infection, reduces mortality and improve feed conversion ratio or feed efficiency.
Answer:
B
Explanation:
In summary,macromolecules are <u>large</u><u> </u> molecules and there are <u>five</u><u> </u><u> </u> types of them.
Smooth er has less things inside of it and rough is more complex.
