The amount of spaces in the soil depends on the type of soil. A sandy soil will have lots of spaces, and a soil high in clay will have fewer spaces. The spaces in aggregates allow both air and water to get into the soil. These spaces are also where tiny living things such as plant roots, microorganisms, insects, and fungal hyphae are found. Sand particles are the largest and heaviest particles.
Silt are the middle size and weight.
Clay are the smallest and lightest particles. These are the different experiments that you will conduct. Keep track of what you find, and write it down in your field journal. Therefore, use the following procedure to mark equal study areas. Each group of two to four students should choose an area of the study site to investigate.