cortex

"The sunburn only affected the epidermis, so it wasn't too deep. "

"What is your thinking on this subject?"

"When you learn something new, like a math problem, your neurons in your brain make new connections. "

"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 leaky faucet in the kitchen is a problem that needs fixing. "

"Of course in my opinion Social Studies is more of a science than an art."

"We saw the internal compartments."

"The teacher activated the students' interest in history by telling them exciting stories about ancient civilizations. "

"The sticker was attached to the exterior of the package"

"Doctors were concerned about the patient's vascular health after the surgery. "

"In biology class, the students dissected a frog to learn about its organs. "