Islands are home to many of the world's rare species. Which of the following factors contributes most to this situation?
a. small land area
b. geographic isolation
c. limited food source
d. fewer predators

the correct answer is anaphylaxis.

anaphylaxis is a condition caused by insect bites, foods, medications, manifested by tongue swelling, shortness of breath, vomiting, low blood pressure. it sometimes may occur without an obvious reason. it is treated with epinephrine injection.other tretments include antihistamines and steroids,