IS this a simple or complex sentence

Groundhogs live in the eastern and central US where there are open fields.

Ans Complex

It has two clauses.

Groundhogs live in the eastern and central US.
where there are open fields

http://www2.ivcc.edu/rambo/eng1001/sentences.htm

To determine whether a sentence is simple or complex, we need to analyze its structure.

In this case, the sentence "Groundhogs live in the eastern and central US where there are open fields" is a complex sentence.

Here's how we can break it down to understand why it is classified as complex:

1. Subject: "Groundhogs"
2. Verb: "live"
3. Prepositional phrases: "in the eastern and central US" and "where there are open fields"

The main clause of the sentence is "Groundhogs live," and it expresses a complete thought. However, it is followed by the dependent clause "where there are open fields," which cannot stand alone as a complete sentence.

Since this sentence contains both a main clause and a dependent clause, it is considered a complex sentence.