"The tarnish can be easily removed with polish."
The word "removed" is the past participle of the verb "remove."
Here's why:
* Past participle: It describes a completed action. In this sentence, the tarnish has already been removed.
* Verb: The sentence is about the act of removing tarnish.
* Passive voice: The sentence is in passive voice ("The tarnish can be removed"). The past participle "removed" is used as part of the passive verb phrase "be removed."
Therefore, "removed" acts as the past participle of the verb "remove" and is part of the passive verb phrase in the sentence.