Human activity has a great impact on the quantity and quality of local water supplies. humans can try to increase awareness and understanding with studying paths, pathogen, pollutants, etc. which will not change as a result of human activity and awareness?

rainwater runoff into local streams

characterization of nanoparticles is a critical step in nanomaterial production as it provides information of dimension, morphology, surface charge, distribution and degree of surface functionalization.

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.