Question

1. underline the subordinate clause in this sentence.

we need to conserve fossil fuels while we are trying to develop alternative fuel sources.

Explanation:

A subordinate clause is a clause that cannot stand alone as a complete sentence and is usually introduced by a subordinating conjunction. In the given sentence, "while" is a subordinating conjunction. The part of the sentence that starts with "while" and cannot stand alone as a complete sentence is the subordinate clause.

Answer:

Underline "while we are trying to develop alternative fuel sources".