PRRS exists in two distinct forms, reproductive and respiratory, and infected farms may experience one or both. A variety of factors, including swine genetics, the specific PRRS virus variants in the herd, health status of the herd, ages of the animals involved, and pregnancy status, may influence the clinical signs.
8495 Karma. 1. Silicon is a metal and oxygen is a non metal hence it will form both ionic and covalent bonds, pauling principle explains the ratio in detail.Was this answer helpful?495 Karma. 1. Silicon is a metal and oxygen is a non metal hence it will form both ionic and covalent bonds, pauling principle explains the ratio in detail.
The chemical compound silicon dioxide, also known as silica (from the Latin silex), is an oxide of silicon with the chemical formula SiO2. It has been known for its hardness s â¦ ince antiquity. large amount of energy is required to overcome these intermolecular forces and thus SiO2 has a high melting point. Note: no silicon-oxygen bonds are broken during melting, just intermolecular forces between SiO2 molecules.