Volcanoes is plural.
The singular would be volcano and the possessive would be volcano's.
Museum is singular. Museum's is singular possessive. Museums is plural. Museums' is plural possessive.
The singular possessive is ant's.The plural possessive is ants'.
Singular possessive: secretary's Plural: secretaries Plural possessive: secretaries'
The singular possessive is biker's; the plural possessive is bikers'.
The word sisters' is plural possessive. The singular is sister, singular possessive is sister's; the plural is sisters, the plural possessive is sisters'.
The singular possessive is army's.The plural possessive is armies'.
The singular possessive is avocado's; the plural possessive is avocados'.
Singular possessive: mother's Plural possessive: mothers'
Women's is a plural possessive. The singular possessive is woman's
Niece's is a singular possessive noun. niece - singular nieces - plural niece's - singular possessive nieces' - plural possessive
The plural possessive form of "volcanoes" is "volcanoes'".
"Bee" can be both singular and plural. The singular possessive form is "bee's," while the plural possessive form is "bees'."