Yes plants get their carbon from air, from carbon dioxide.
But it was not known to me that some tomatoes and cucumbers etc that are in the supermarket are made like this, not grown on soil but water.
Shouldn't there be a description tag on the product?
Learning that the long cucumbers are made in soil it was decided to buy these. They taste great. Are they more healthy too?
Tomatoes that are water grown look perfect. But are they?
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