impairs

"You should sleep 8 hours a day."

"The student's ability to concentrate in noisy environments was crucial for success in the class. "

"The experience affected me deeply."

"The long illness weakened the child, making it harder for her to focus on schoolwork. "

"The effect of the hurricane was a devastated landscape."

"Often used to imply membership of a large class."

"My sister is often late for school. "

"The loud music was diminishing as the car drove further away. "

"He is a student of life."

"The heat of sunlight at the focus of a magnifying glass can easily set dry leaves on fire."

"The news of the project's failure affected the team negatively. "

"to deteriorate the mind"