Final answer:
The two common allergens that come from nuts are peanuts and tree nuts, both of which can cause serious allergic reactions such as anaphylaxis.
Step-by-step explanation:
Of the 10 common allergens, the two that come from nuts are peanuts and tree nuts. These foods are known to cause food allergies in some individuals. An allergy occurs when the immune system mistakenly identifies a harmless food protein as a threat and reacts defensively, which can lead to a variety of symptoms such as itching and swelling of the mouth, vomiting, diarrhea, and in severe cases, anaphylaxis. Peanuts are a legume and are one of the most common causes of severe allergy attacks, while tree nuts include a variety of nuts like almonds, walnuts, hazelnuts, and cashews, among others, which can also trigger allergic reactions.