Examine the soil profile and use the drop-down menu to select what each label identifies. Label O (top soil, organic material, weathered rock)
Label A (top soil, organic material, subsoil)
Label B (top soil, subsoil, weathered rock)
Label C (organic material, subsoil, weathered rock)

The answer for Label O is: Organic material. Label A is: topsoil. Label B is: subsoil. Label C is: weathered rock

Explanation:

I hope this helped answer your question and I'm sorry if it didn't help

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,