“Nothing is lost, nothing is created, everything is transformed”. Does it mean that making babies does not add mass/matter to the planet ?
In: Biology
The earth is a mostly closed ecosystem. Occasionally a meteor comes into the atmosphere and there are times when we spend a space probe off planet. Other than that, we’re not getting deliveries of things like water, dirt, wood, iron, and oxygen from other planets. We add to our inventory of stuff by extracting things from the earth, or by deconstructing existing things.
When it comes to human growth, we eat food and then our bodies have mechanisms to use that fuel to build on to ourselves, or even to build reproduction parts to start a new human. That fuel comes from the same closed loop of things within the earth’s ecosystem.
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