Are the bolded words a phrase or clause?

Although the terminology is evolving, a first-year high school or college student is traditionally classified as a freshman, and a second-year student is called a sophomore.

Are the bolded words a phrase or clause?

By refusing to surrender her seat to a white passenger, African American activist Rosa Parks inspired a boycott of city buses in Montgomery, Alabama, and helped strengthen the civil rights movement.

Are the bolded words a phrase or a clause?

Ironically, although approximately seventy-one percent of the earth is covered by water, thirty-three percent of its land area is desert.

Are the bolded words a phrase or a clause?

The role of a prosecutor is to present a court case against an accused offender.

Are the bolded words a phrase or a clause?

The appliance store's policy allows returns for thirty days; however, refunds require a receipt.

Are the bolded words a phrase or a clause?

Although glaciers occupy only about ten percent of the earth's land surface, they contain about seventy-five percent of its fresh water.

Are the bolded words a phrase or a clause?

Although chefs typically make carpaccio, a raw meat appetizer, from beef, they can also make it from venison, salmon, or tuna.

Are the bolded words a phrase or a clause?

Humans are classified as omnivores because they generally consume both plants and animals, although some people are vegetarians or vegans.

Select the independent clause.

After Francis Scott Key witnessed an intense British attack on Fort McHenry during the War of 1812, he wrote the words to the "Star Spangled Banner", the national anthem of the United States of America.

Select the dependent clause.

Although a newborn copperhead is considerably smaller than an adult, its venom is equally toxic.