– if we throw away, say, 1T of grass clippings every year, and grass is just the nutrients of the soil, some sunlight and water, why do we not need to add 1T of new soil to the lawn every year?

Question

– if we throw away, say, 1T of grass clippings every year, and grass is just the nutrients of the soil, some sunlight and water, why do we not need to add 1T of new soil to the lawn every year?

In: Biology

Answer 1

There are other contributing factors, but the majority of plant growth is driven from the carbon they “inhale” during photosynthesis. This carbon is primarily where the mass of plants come from.