theca

"Condoms are designed to protect against sexually-transmitted diseases."

"The crab's exoskeleton protects it from predators. "

"During the red tide, the ocean water turned a rusty color due to a massive bloom of dinoflagellate organisms. "

"The student used a microscope to see the tiny cells in the plant leaf. "

"The students are developing their reading skills in their English class. "

"Two men were seated in a well-lighted compartment of a third-class railway carriage."

"To explain a chapter of the Bible."

"The responsible for the project is Maria. "

"The large oak tree surrounding the picnic area provided welcome shade. "

"The thick fog was enveloping the entire town, making it hard to see. "

"The widget making machine is being used for production now."

"Sentence: "The science class learned that dinoflagellates are tiny organisms in the ocean that use two whip-like tails called flagella to move." "