The plural form of the noun theory is theories.
The plural possessive form is theories'.
example: All of his theories' validity is questionable.
The plural possessive form of "theory" is "theories'".
The possessive form for the noun theory is theory's.Example: The theory's basis is founded on scientific principles.
The plural form of the noun teacher is teachers.The plural possessive form is teachers'.Example: We have a new coffee maker in the teachers'lounge.
The plural possessive of "child teacher" is "child teachers'".
The possessive plural form of "curriculum" is "curricula's".
The possessive form of the singular noun teacher is teacher's.Example: I put your note on the teacher's desk.The plural form of the noun teacher is teachers.The plural possessive form is teachers'.Example: The teachers' meeting is scheduled for three.
Coaster's is singular possessive. The plural is coasters, the plural possessive is coasters'.
The correct form is "its" for the possessive form in the plural. "Its" is used for both the singular and plural possessive forms, without an apostrophe.
The plural is briefs. The plural possessive is briefs'.
The plural is lads. The plural possessive is lads'.
The plural is trollies. The plural possessive is trollies'.
The plural is relatives. The plural possessive is relatives'.
The plural is stations. The plural possessive is stations'.
Museum is singular. Museum's is singular possessive. Museums is plural. Museums' is plural possessive.
The singular possessive form is heart's; the plural possessive form is hearts'.
The plural of rose is roses. The plural possessive is roses'.
The plural form is homes; the plural possessive is homes'.
The singular possessive is biker's; the plural possessive is bikers'.