Thirty million different kinds of insects

sentence run on or fragment

I'll be glad to check your answer.

Sentence

No.

There's no verb.

fragment

Fragment is right.

To determine whether the sentence "Thirty million different kinds of insects" is a run-on sentence or a fragment, we need some additional context. If this sentence is a stand-alone statement that doesn't connect to any other information or doesn't have a clear subject or verb, then it could be considered a fragment. However, if it is part of a larger sentence or if there is more information before or after it that helps establish its context, then it may not be a fragment.

Without additional context, it is difficult to definitively classify the sentence as a run-on or a fragment.