“life”

“living in air”

“air life”

“living a double life”

“of both lives”

“life without air”

“study of star life”

“self-life-writing”

“life-writing”

“the study of life”

“life lump”

“the whole body of life”

“life machinery”

“measurement of life”

“viewing the living”

“life sphere”

“life on a tree”

“study of outside life”

“long-lived”

“small life”

“study of small life”

“life of Zeus”