I think the answer is "It's tightly packed cells allow for protection against harmful substances."
They should receive his or her vaccination at around 2 months of age!
I would say it’s probably B or C
They are both ectothermic, but fish have gills, and reptiles have lungs.
This type of passive transportation is called OSMOSIS.
Osmosis is a type of passive transportation in which a liquid moves from the region of high concentration to the region of low concentration. The movement usually continues until the amount of liquid on both sides are the same. This type of movement does not require energy because the flow is naturally favored, that is, molecules moves from high end to low end.
