Question

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Answer 1

Answer:

1. When living organisms breathe they give out carbon dioxide gas as a waste product. Carbon dioxide gas can be detected (identified) using a carbon dioxide indicator solution called bromothymol blue. To find out if there are living organisms present in the four different levels of soil taken from the deciduous forest.
2. take some dry garden soil in a breaker. add water into the breaker and stir the mixture with a glass rod. OBSERVATION : YOU SEE THE BUBBLES COMING OUT OF THE SOIL. THESE BUBBLES ARE OF THE AIR WHICH IS PRESENT IN THE SPACES BETWEEN THE SOIL PARTICLES.
3. Calculate the moisture content of the soil by subtracting the weight of the dry soil from the weight of the moist soil, and then dividing by the weight of the dry soil. Although the measurement is simple, it is important to determine soil moisture content in order to better understand soil characteristics.
4. Particle size analysis breaks a soil into texture classes – sand, silt or clay.

• Soil texture influences nutrient retention, water storage and drainage.
• Particles greater than 2 mm are removed before analysis.
• The soil textural triangle is used to determine soil type based on sand, silt and clay percentages.

5. If you want an exact percolation rate, you need to calculate the volume of water held between the two lines, and the area of the circle created by the cylinder. This way you can calculate the unit of water per unit of soil surface per unit of time.

6. The absorption of water by different soil can be find out by taking 50g of different soil samples. Pour the soil in different funnels placed in different beakers and pour water in the soil with the help of measuring cylinders.

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