He clearly understands the distinction between public and private.

He is often confused with his twin brother.

His explanation confused me.

The condor is a species of New World vulture.

The mitochondria play an important role in producing energy for the cell.

Let's go to see a movie this time.

A palatal consonant is produced when the middle part of the tongue contacts or approaches the hard palate.

My mother takes chondroitin every day for her joint pain.

Kinda, I want to do something more fun.

What is the common difference of this sequence?