The branch of biology dealing with the relationships of organisms with their environment and with each other.
The natural process which keeps an organism alive.
Child support.
Actions performed to keep some machine or system functioning or in service.
A tort and (in some jurisdictions) an offence committed when a third party who does not have a bona fide interest in a lawsuit provides help or acquires an interest to a litigant's lawsuit.
Alimony, a periodical payment or a lump sum made or ordered to be made to a spouse after a divorce.
Money required or spent to provide for the needs of a person or a family.