Photosynthesis Supplies a Plant's Mass, Not Soil
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
Photosynthesis, per Bio 0579, converts carbon dioxide into carbohydrate, and that carbon — not soil — accounts for most of a plant's dry mass.
Show
Soil still supplies water and minerals, per Bio 2573, but these form only a small fraction of dry weight.
Watch for
"Plants get mass from soil," per Bio 2581, confuses soil's nutrient-and-water role with photosynthesis's role as the mass-building reaction.