1) The word "computer" contains three vowels: O, U, and E.

2) The word "umbrella" contains three vowels: U, E, and A.

3) The ocean is home to an incredible variety of marine life, including thousands of species of fish, mammals, reptiles, and invertebrates.

4) The concept of campaign finance refers to the funding and financial resources required to support political campaigns, including donations from individuals, organizations, and political action committees (PACs).