True or false vinger is used in fermintation

In numbering carbon atoms in the parent chain of a hydrocarbon, why would you number from right to left, rather than left to right

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange

When a septic tank backs up a goes in to clean it out