Birds are carriers ( they can transport disease )
That would be CO2 also known as carbon dioxide.
Homeostatic reflexes are automatic responses to stimuli by organisms such as mammals. It may be innate or acquired from nature. The mammalian diving reflex is an example of homeostatic reflexes experienced by all air-breathing vertebrates (animals with backbone). The reflex optimizes respiration while all the oxygen stores are utilized by the brain and the heart.
Monomers are small subunits that compose larger molecules or macromolecules. Biomolecules are large molecules present in living organisms. There are four major classes of biomolecules: carbohydrates, lipids, proteins and nucleic acids. Each with monomers: monosaccharides, glycerol and fatty acids, amino acids and nucleotides, respectively.
