An ulcerated stomach lining often repairs itself once the source of inflammation has been eliminated. how is this possible?

a.) the tissue lining the stomach is an epithelium and thus capable of repair and renewal.
b.) the parasympathetic innervation of the stomach wall stimulates constant repair and renewal.
c.) the mucosa consists of a particularly vascular epithelium that facilitates efficient repair and renewal.
d.) all of the listed responses are correct.

c.) The mucosa  consists of a particularly vascular epithelium that facilitates efficient repair and renewal

a.) The tissue lining the stomach is an epithelium and thus capable of repair and renewal

Explanation:

The cells that form the lining of the stomach are deemed to wear out regularly due to the regular food intake they handle.

Due to this constant wearing, this cells have a mechanism of rejuvinating in order to handle their work.

what is the statement?

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.