Methane is a greenhouse gas that has 23 times adverse effects on climate than carbon dioxide. Methane is that greenhouse gas which is produced by the raising of cattle. On an average a cow can produce 80 - 120 kgs of methane in an year.
The words "asset" and "liability" are two very common words in accounting. Liabilities are legally binding obligations that are payable to another person or entity. Accounts payable, loans, mortgages, deferred revenue,... come under liabilities.
The carbon, oxygen, hydrogen and nitrogen are the key elements in aminoacids as all aminoacids contain amine (NH2) and carboxyl (COOH) as functional groups and R group for every specific aminoacid.