tibia

"My sister is a biologist studying the effects of pollution on local river ecosystems. "

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

"The soccer player protected his shinbone with a pad during the game. "

"The violinist was a master of her instrument."

"Originally, this paper was white, but over the years it has yellowed with age."

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

"The clumsy student fractured the test tube while rushing in the lab. "

"When a body collides with another, then momentum is conserved."

"The store displayed the new fall clothing in its front window. "

"The grasshopper hopped across the schoolyard during recess. "

"The doctor examined her metatarsus after she complained of pain in the middle of her foot. "

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