I'm pretty sure the answer is atmosphere, hope this helps!
Explanation:
The greenhouse effect works much the same way on Earth. Gases in the atmosphere, such as carbon dioxide, trap heat similar to the glass roof of a greenhouse. These heat-trapping gases are called greenhouse gases. ... At night, Earth's surface cools, releasing heat back into the air.
The body's immune system thinks what he/she is eating or inhaling is a pathogen. The immune system sends white blood cells to attack. This triggers an allergic reaction.
For example: I am allergic to asparagus (I'm not joking, I really am) and walnuts. Anytime I eat one of those, my body's immune system thinks it's a pathogen for some reason and attacks and triggers an allergic reaction in me. This makes my breathing hard and makes it really itchy. Good thing it's not that severe so I can eat some if I want, but sometimes allergic reactions could cause hospitalization or death.
Specializations of the small intestine are related to surface absorption it doesn't include Peyer's patches.
<h3>What is the small intestine?</h3>
It lies between the stomach and the large intestine and is by far the longest part of the digestive tract.
It presents various specializations that guarantee an increase in the surface area for absorption of nutrients such as circular folds, microvilli, villi.
Therefore, we can conclude that specializations of the small intestine are related to surface absorption it doesn't include Peyer's patches.
Learn more about the small intestine here: brainly.com/question/11348399