1. combine these sentences to make a compound sentence. my brother is older than me. my sister is younger.

1. combine these sentences to make a compound sentence. my brother is older than me. my sister is younger.
Answer
Brief Explanations:
To form a compound sentence, we use a coordinating conjunction. Here, "while" can show the contrast between the ages of the brother and sister.
Answer:
My brother is older than me while my sister is younger.