Fact 1: The looseness of soil has a positive impact on a plant 's roots' growth in that soil.

Fact 2: Fertile soil is loose, absorbent and pleasant smelling.

Given the two facts above, answer the question "The growth of plant roots is positively impacted by what kind of soil?" with the following options: 
- fertile
 - claggy
 - heavy
 - alluvial
 - sun's heat
 - salinity
 - warm
 - dense


 

 fertile        