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"The farmer used fertilizer to promote the fertilization of the soil, making it ready for planting. "

"The botanist studied the different types of flowers in the school garden. "

"The development of this story has been slow."

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

"The turtle's hard integument protected it from predators. "

"to enclose lands"

"He examined the crime scene for clues."

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

"He listened carefully to his mother's concerns, feeling sorrowful about her disappointment. "

"The child develops her reading skills with practice. "

""The beginnings of their friendship started in elementary school." "

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