What is the adverb in Parvo a common disease dogs caused by virus air.?

The adverb in the sentence "Parvo is a common disease in dogs caused by a virus in the air" is "commonly". It modifies the adjective "common".

Let's break down the sentence:

* Parvo: The subject of the sentence (a type of virus)

* is: The verb

* a common disease: Describes the subject, with "common" being the adjective.

* in dogs: Indicates where the disease is found.

* caused by a virus: Explains the origin of the disease.

* in the air: Describes where the virus is found.

The sentence could be rephrased as: Parvo is a disease that is commonly found in dogs.