pterobranchs

"The ocean separates the continents of Africa and South America. "

"He was a marine in World War II."

"Suzanne collected all the papers she had laid out."

"I got a letter from my brother."

"The coffee maker has a filter to separate the coffee grounds from the liquid. "

"The mother bird was a diligent feeder, constantly bringing worms to her chicks in the nest. "

"I need to study my biology notes."

"He examined the crime scene for clues."

"Often used to imply membership of a large class."

"In the bird sanctuary, the volunteers are dedicated feeders, ensuring all the birds have enough to eat. "

"The room has a wooden floor."

"Biologists study living things, from tiny bacteria to giant whales. "