Which of the following is a situation that could cause evolutionary change that is not due to natural selection
A. A volcano irrupt and kills many individuals in a population
B. A mutation produces see stars that are less visible to predators
C. And insecticide is sprayed in a community to combat mosquitoes
D. Cattle are treated with antibiotics to prevent the spread of infections

answer; ///i believe its: ///(embolus);

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.  

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,