epoxide

"We prepared the spacecraft for takeoff."

"The university's admission process is very selective, meaning they carefully choose only the best students. "

"The prisoners were kept in a secure compound. "

"a five-membered ring"

"The oxidation of iron causes rust to form on metal objects. "

"Her skin was covered with tiny scratches."

"The student was a strong resistant, leading the group in their peaceful protest against the unfair school rules. "

"The supermarket sells a wide variety of food products. "

"The birds had built an amazing structure out of sticks and various discarded items."

"Many toys are made of plastics because they are durable and easy to mold. "

"The scientist studied the effects of different types of soil on plant growth. "

"The scientist studied the chemical composition of the soil sample. "