The term DIET SITE can be solved by the five-letter word WORMS. A diet site is a place where animals or insects feed on plants or other organisms. WORMS are a type of invertebrate that feed on organic matter, such as decaying plants and animals. They are often found in soil and are an important part of the food chain. WORMS are also used as bait for fishing and are a popular food source for birds and other animals.