Animal dander would be the answer you're looking for.
Hope this helps :)
The function of protein that helps chemical react is catalyzing
These animals were living in an environment with a warm climate that results in changing sea levels. These conditions create a lot of shallow inland seas allowing these animals to thrive. The Cretaceous period is the last period of the Mesozoic area where new groups of mammals, birds, and flowering plants appeared on Earth.
no because Separation of oxygenated and deoxygenated blood in the heart of three types of animals. The three-chambered frog heart mixes oxygenated and deoxygenated blood in the ventricle. Therefore, the body never receives fully oxygen-rich blood.
The short sequences of characters that appear and can be
seen at the end of a filename preceded by a period is filename extensions. While
a sequence structure is a set of statements that execute in the order they
appear.