You could add the suffix -s to it to make the word isles.
You could add the suffix -ful to it to make the word resourceful.
falsehood
fragrance
It can be, if you add a suffix or prefix. For example, in the word 'going', 'go' is the base word, and '-ing' is the suffix.
To add a suffix to "habitat," you would simply attach the suffix to the end of the word. For example, adding the suffix "-ion" would create the word "habitation."
a
One suffix you can add is -en. In this case, the word would be seen.
To add the suffix '-ness' to 'immaterial', you would remove the last 'i' and add 'ness'. The word would become 'immaterialness'.
-ize
You would add the suffix -less meaning without or lacking, to make "senseless."
You can add the suffix "ment" to form the word "involvement."
The suffix you could add to the root word "truth" to create a word that means characterized by honesty is "-ful", resulting in the word "truthful".
The suffix of "hunt" is "-er," which would make it "hunter."
Legalizing
Sure, if you add the suffix "-ly" to the word "significant," it becomes "significantly."
The adding a prefix to the word "add" would result in the word "postadd".