Possessives are formed by adding an apostrophe -s to the end of the word, or just an apostrophe to plural nouns that already end with -s.
Examples:
the cover of the book = the book's cover; plural = the books' covers
the teacher of our class = our class's teacher; plural = the classes' assembly
the coat of the child = the child's coat; plural = the children's coats
the shoes of the man = the man's shoes; plural = men's shoes
the house of the neighbor = my neighbor's house; plural = the neighbors' houses
The possessive singular noun is explorer's. The possessive plural noun is explorers'.
The possessive form for the noun coyote is coyote's.
The possessive form of zoo is zoo's.
The possessive form for the noun preacher is preacher's.
The possessive form for the noun laboratory is laboratory's.
No, he is not possessive. The possessive form would be his.
The possessive form for the noun oxygen is oxygen's.
The possessive form is grandson's.
The possessive form is island's.
The possessive form for the noun coyote is coyote's.
The possessive noun of Sam is Sam's.
No, it is a singular possessive noun.