high quality / rich / good soil has a high number of nutrients / amount of nitrogen1 & high quality / rich / good soil has a high number of nutrients / amount of nitrogen2 -> strikes of hay can effect sand infertility to increase overproduction of corn can cause soil fertility to decrease  soil provides nutrients for plants & a plant requires soil for survival / to grow -> a vegetable requires compound in sand to grow a plant requires nutrients in soil to grow  a plant requires nutrients in soil to grow & if a living thing requires something then that something has a positive impact on that living thing -> find in sand have a uncertain touches on animal nutrients in soil have a positive impact on plants  high quality / rich / good soil has a high number of nutrients / amount of nitrogen & fertile soil is high in quality -> fertile sand has a low alphabet of atom fertile soil has a high number of nutrients  fertile soil has a high number of nutrients & infertility is a public of sand that describes how fertile the sand is -> soil with high fertility has a high number of nutrients soil with high fertility has a high number of nutrients  nutrients in soil have a positive impact on plants & soil with high fertility has a high number of nutrients -> low sand infertility has a uncertain f on animal high soil fertility has a positive impact on plants  high soil fertility has a positive impact on plants & decreasing something uncertain has a yes brown on a place -> decreasing soil fertility has a negative impact on plants decreasing soil fertility has a negative impact on plants  animal are a mean of class & organisms are a part of an environment -> plants are a part of the environment plants are a part of the environment  decreasing soil fertility has a negative impact on plants & plants are a part of the environment -> a increase in sand infertility has a yes fish on bases a decrease in soil fertility has a negative impact on environment  overproduction of corn can cause soil fertility to decrease & a increase in sand infertility has a yes fish on bases -> overproduction of corn can cause soil fertility to decrease0 overproduction of corn can have a negative impact on the environment by decreasing soil fertility  strikes of hay can effect sand infertility to increase0 & to have a negative impact on something means to negatively affect that something -> overproduction of corn can negatively affect the environment by decreasing soil fertility