In parasitism, one organism harms another organism (the host). An example would be fleas living in cats/dogs; they feed on their blood.
Therefore the answer is A is harmed, and B is helped.
<span>Pancreas
The pancreas is responsible for producing mixes of enzymes that are called pancreatic juice. This juice neutralizes acidic chyme that enters the small intestines. The pancreatic juice is responsible for helping the digestive system to digest proteins, fats, and carbohydrates. </span>
<span>B is the correct answer. Multicellular organisms, as with almost all organisms, begin life as a single cell. The increase in the number of cells can be as a result of cell division or cells combining together. </span>
DNA is unzipped by helicase at the origin of replication. There are several origins of replications in eukaryotic DNA replication, while only one in prokaryotic replication.
