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"The museum displayed a perfect replicate of the famous statue, allowing visitors to admire the artistry up close without damaging the original. "

"I need some help with my homework."

"My sister brought several books to the library, and that one is about dinosaurs. "

"She gave a studied reply."

"Scientists study plants to understand how they grow. "

"It looks weaker and weaker, the more I think about it."

""Washing your hands often can help prevent the spread of viruses, which can make you sick." "

"The enzyme in our saliva catalyzes the breakdown of starch into sugar, which is why crackers taste sweeter after you chew them for a while. "

"My son is taking biology classes at school, learning about different types of plants and animals. "

"The student's transcription of the professor's lecture helped her study for the exam. "

"During DNA replication, polymerase helps create new DNA strands by copying existing ones. "

"Scientists use DNA to learn about a person's family history. "