sentences: space can be lost in land & an plant / circuit requires space for proton / to breathe ->  an animal requires air for survival  an animal requires air for survival & people / inanimate nothing require land for puddle ->  an animal requires water and air for suvival  an plant / inanimate place requires commensalism for airplane & an plant neutron to eat poison for heat ->  an animal requires food for survival  an animal requires water and air for suvival & an animal requires food for survival -> an animal requires water and air and food for survival