nucleolus

"He was conspicuous by his absence."

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

"The carpenter rounded the edges of the table."

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

"The long, red slide was great fun for the kids."

"He is a student of life."

"The nucleus of the family's discussions was always about who would do the dishes. "

"the within appeal"

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

"The inside of the building has been extensively restored."

"High above, vultures circled around."

"The teacher pointed to the map to show the students where the capital city was located. "