Do the words in RED form a dependent clause or independent clause?

Until Mr. Sanchez had his first cup of coffee, he got very angry if we didn't have our homework.

Do the words in RED form a dependent clause or independent clause?

While Bailey slept on the sofa in front of the TV, Samson, the family dog, gnawed on the leg of the coffee table.

Do the words in RED form a dependent clause or independent clause?

While Bailey slept on the sofa in front of the TV, Samson, the family dog, gnawed on the leg of the coffee table.

Do the words in RED form a dependent clause or independent clause?

Diane decided to plant tomatoes in the back of the yard where the sun blazed the longest during the day.

Do the words in RED form a dependent clause or independent clause?

Diane decided to plant tomatoes in the back of the yard where the sun blazed the longest during the day.

Do the words in RED form a dependent clause or independent clause?

Tanya did poorly on her history exam because Giselle, her classmate, insisted on gossiping during their study session instead of studying.

Do the words in RED form a dependent clause or independent clause?

Tanya did poorly on her history exam because Giselle, her classmate, insisted on gossiping during their study session instead of studying.

Do the words in RED form a dependent clause or independent clause?

Rhonda gasped when a six-foot snake slithered across the sidewalk.

Do the words in RED form a dependent clause or independent clause?

Rhonda gasped when a six-foot snake slithered across the sidewalk.