A fossil that has unusual features is found in many areas on Earth. It represents a brief period of geologic time, but occurs in small numbers. Would this make a good index
fossil? EXPLAIN

answer: b

coz red blood cells marrow and circulates the body for 120 days.

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,