What part of speech is the word there and now in sentence are fewer students her class now?

Let's break down the sentence and identify the parts of speech:

* "There" is an adverb in this sentence. It indicates a location or place, but it doesn't directly modify a noun.

* "Now" is also an adverb. It specifies the time frame.

Here's how the sentence works:

* "There are fewer students in her class now."

* "There" indicates a place (the classroom) but doesn't modify a noun.

* "Now" indicates the current time.

Let me know if you'd like to explore other parts of speech in this sentence!