Answer:

• 1.Sandy Soil is light, warm, dry and tend to be acidic and low in nutrients. Sandy soils are often known as light soils due to their high proportion of sand and little clay (clay weighs more than sand). Clay Soil is a heavy soil type that benefits from high nutrients.

• 2.The color in soil is mainly due to two factors – organic content and the chemical nature of iron compounds found in the soil. Iron gives soil a brown, yellow or red color. ... Soil texture refers to the proportions of sand, silt and clay in the soil. Soil with equal amounts of sand, silt and clay is called a “loamy” soil.

• 3.Observations and resultsWhen water is added to soil, it can replace the oxygen that is naturally in the soil, and make the soil darker. This means wetter soil will have less oxygen compared with drier soil. When enough water is added, soil can become saturated and the water will start to form a layer on top of it.

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