Native plants typically have deep and
extensive root systems which help them survive dry conditions
and which effectively hold soil. By comparison cool season turf
grasses, such as Kentucky bluegrass at the far left in the illustration,
have very shallow root systems which are much less effective in
controlling erosion and withstanding severe drought. The root
systems are a major part of the biomass provided by vegetation.
Through photosynthesis these plants use carbon dioxide to create
complex hydrocarbons, thereby enriching the soil and reducing
the "greenhouse effect" of carbon dioxide.
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