In this task, you are given a paragraph, and your job is to generate comma-separated entities present in the given paragraph. Generate entities from a given passage in such a way that (i) they are present in the paragraph, (ii) they are non-duplicate, (iii) they underwent a state change during the process. Avoid creating entities that (i) aren't present in the process paragraph and (ii) aren't significant. 

Techtonic plates in the earths crust move. Movement creates fissures. Upheavals in the crust. Fissures allow lava to erupt into volcanoes at the surface. Volcanoes erupt, accumulating lava, forming mountains. Upheavals in the crust become their own mountains. 
tectonic plates ,fissures ,upheavals in the crust ,lava ,volcanoes ,mountains ,their own mountains 

Food enters the body. The food is broken down. Sugars from the food enter the bloodstream. Blood sugar must be within a particular range to avoid damaging many organs. Sometimes the brain tells the pancreas the blood sugar (glucose) is too low. The pancreas releases glucagon to change the blood sugar to a better level. Sometimes the brain tells the pancreas the blood sugar (glucose) is too high. The pancreas releases insulin to change the blood sugar to a better level. 
food ,sugars ,blood sugar ,glucagon ,insulin 

Solution caves are formed in limestone and similar rocks by the action of water. After a rain, water seeps into cracks and pores of soil and rock. The water percolates beneath the land surface. Some of the water reaches a zone where all the cracks and pores in the rock are already filled with water. Rainwater absorbs some carbon dioxide as it passes through the atmosphere and even more as it drains through soil and decaying vegetation. The water combines chemically with the carbon dioxide. A weak carbonic acid solution is formed. This acid slowly dissolves calcite, forms solution cavities, and excavates passageways. 

Solution caves ,carbon dioxide ,weak carbonic acid solution ,calcite ,solution cavities