deleterious

"You should sleep 8 hours a day."

"a low wall a low shelf"

"Wear a hat to protect your skin from harmful sunlight."

"The divers encountered a huge school of mackerel."

"I have a house and a car."

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

"My sister is often late for school. "

"The heavy rain was unexpected; we had planned a picnic in the park. "

"Her dedication to a healthy diet and exercise shows her high fitness level. "

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

"My concentration was high during the important math test. "

"The difference is subtle, but you can hear it if you listen carefully."