sentences: a pond is a kind of body of water & if the water in a body of water decreases then that body of water might cease to exist ->  if the water in a pond decreases then that pond might cease to exist  if the water in a pond decreases then that pond might cease to exist & drought is when available water decreases in an environment ->  a drought may cause a pond to cease to exist  a drought may cause a pond to cease to exist & if an animal 's habitat ceases to exist then that animal will die ->  a drought may cause animals that live in ponds to die  a pond is a kind of body of water & a fish lives in water ->  fish live in ponds  fish live in ponds & a fish is a kind of animal ->  a fish is a kind of animal that lives in ponds  a drought may cause animals that live in ponds to die & a fish is a kind of animal that lives in ponds -> a drought may cause fish to die