The looseness of soil has a positive impact on a plant 's roots' growth in that soil.
Fertile soil is loose, absorbent and pleasant smelling.
The growth of plant roots is positively impacted by fertile soil.
The growth of plant roots is positively impacted by what kind of soil?
a: fertile
b: claggy
c: heavy
d: alluvial
e: sun's heat
f: salinity
g: warm
h: dense