Comment by 8note

18 hours ago

huh?

we live in an open system at any scale except the whole universe and even that is gaining energy

the earth is slowly losing both hydrogen and oxygen, and has tons of energy coming in from the sun

into the scale of a field, or a state or a country or a continent, theres very obvious flows of the water cycle introducing water via rain/snow, and removing it via evaporation, seepage, and rivers.

the only closed system is if you make one of those wine fermenter biospheres, and even there its open to energy coming in via light