According to an article in the journal Science, the opah is a rarity: A warm-blooded fish that can swim fast by flapping its fins like water wings as it speeds through the water. The movement speeds the opah's metabolism and heats its blood, leading to better reaction times, according to researchers.
A. Rhinitis is an inflammation of the tissues inside the nose. It causes sneezing, runny nose and stuffy nose. It is often accompanied by conjunctivitis (itchy, watery eyes). Most often it is caused by an allergy or an infection.
It's a different story with allergies. They're caused by an overactive immune system. For some reason, your body mistakes harmless things, such as dust or pollen, for germs and attacks them. When that happens, your body releases chemicals such as histamine, just as it does when fighting a cold. This can cause a swelling in the passageways of your nose, and you'll start sneezing and coughing. Unlike colds, allergies aren't contagious, though some people may inherit a tendency to get them.