decay

"The condition for getting a raise at work is meeting your quarterly targets. "

"The fallen leaves decomposed over the winter, turning into rich soil. "

"The teacher announced the early dismissal due to the snowstorm. "

"The radioactive was carefully stored in a lead-lined container at the science lab. "

"The subway train is undergoing a tunnel underneath the city. "

"the resistance of bacteria to certain antibiotics"

"The plants gradually grew taller over the summer. "

"heat radiation"

"My sister's reputation for being organized helped her excel in school. "

"to deteriorate the mind"

"The deterioration of the student's grades was a concern for his parents. "

"My family keeps milk and other perishable foods in the refrigerator. "