In a double-blind experiment the experimenter knows what the experiment is about the experimenter knows what the experiment is about, but the people in the experiment do not neither the experimenter nor the people in the experiment know what the experiment is about both the experimenter and the people in the experiment know what the experiment is about

1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.