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. 

[Q]: Carbon dioxide from the air passes through small pores (holes) in the leaves. These pores are called stomata. Water is absorbed by the roots. It passes through vessels in the stem on its way to the leaves. Sunlight is absorbed by a green chemical in the leaves. 
[A]: carbon dioxide ,water ,sunlight 


[Q]: Forest fires burn forests. The animals living in the forest have fewer places to hide. Predators can now find their prey eaiser. Birds will fly away from the area. Waters warm up which hurts the fish swimming in them. 
[A]: forests ,places to hide for animals 


[Q]: Comets fly around in outer space. A comet flies close to a planet. The comet enters the planet's atmosphere. The comet crashes into the planet. The energy of the impact creates a hole on the planet. 
[A]:
comet ,hole; crater