Question: Which human organ system exchanges gases with the environment?
Answer: respiratory
Hypothesis: the respiratory system is used for exchanging gasses with the environment
Supporting facts: sent1: organ system means body system sent2: breathing is a kind of process sent3: a lung is a kind of organ for breathing air sent4: air is a part of the environment sent5: the lungs are a part of the respiratory system sent6: breathing out is when animals exhale / expel carbon dioxide from their lungs into the air sent7: an example of giving something off is an animal exhaling sent8: gaseous means of gas sent9: vapor is synonymous with gas sent10: carbon dioxide is a kind of gas sent11: lungs are used for breathing air by land animals / birds sent12: oxygen can be found in air sent13: air is a kind of gas sent14: breathing in is when animals inhale air into their lungs sent15: take in oxygen means get oxygen into the blood sent16: blood absorbs oxygen in the lungs sent17: all animals breathe sent18: internal organs are a part of the body sent19: breathing is a kind of function sent20: carbon dioxide can be found in the air sent21: an example of taking something in is an animal inhaling something sent22: to convert means to exchange sent23: something exchanging things with something else means that something taking one kind of thing from that something else and giving off another kind of thing to that something else sent24: to breathe in means to absorb air sent25: the air is a kind of substance
Reasoning: [BECAUSE] an example of taking something in is an animal inhaling something [AND] something exchanging things with something else means that something taking one kind of thing from that something else and giving off another kind of thing to that something else [INFER] int1: an example of an animal exchanging things with something else is that animal inhaling one kind of thing from that something else and giving off another kind of thing to that something else [BECAUSE] int1 [AND] an example of giving something off is an animal exhaling [INFER] int2: an example of an animal exchanging things with something else is that animal inhaling one kind of thing from that something else and exhaling another kind of thing to that something else [BECAUSE] breathing in is when animals inhale air into their lungs [AND] breathing out is when animals exhale / expel carbon dioxide from their lungs into the air [INFER] int3: breathing is when animals inhale air and exhale carbon dioxide into the air [BECAUSE] int3 [AND] air is a part of the environment [INFER] int4: breathing is when animals inhale air from the environment and exhale carbon dioxide into the environment [BECAUSE] carbon dioxide is a kind of gas [AND] air is a kind of gas [INFER] int5: air and carbon dioxide are both kinds of gasses [BECAUSE] int4 [AND] int5 [INFER] int6: breathing is when an animal inhales one kind of gas from the environment and exhales another kind of gas into the environment [BECAUSE] int2 [AND] int6 [INFER] int7: an example of an animal exchanging gasses with the environment is an animal breathing [BECAUSE] int7 [AND] a lung is a kind of organ for breathing air [INFER] int8: a lung is a kind of organ for exchanging gasses with the environment [BECAUSE] int8 [AND] the lungs are a part of the respiratory system [INFER] int9: the respiratory system is used for exchanging gasses with the environment