Question

1. Take some garden soil Observe it. Explain what does soil contains by making a video 2 Concept of three forms of water. Through an experiment show the conversion of ice (solid form of water) to water (liquid form) and water to water vapour ( gases form) Explain it through a video​

Answer 1

Answer:

the process by which plants make their food with the help of sunlight water and nutrients and carbon dioxide to cause photosynthesis

Answer 2

Answer:

The soil moisture content indicates the amount of water present in the soil.

It is commonly expressed as the amount of water (in mm of water depth) present in a depth of one metre of soil. For example: when an amount of water (in mm of water depth) of 150 mm is present in a depth of one metre of soil, the soil moisture content is 150 mm/m (see Fig. 36).

Fig. 36. A soil moisture content of 150 mm/m

The soil moisture content can also be expressed in percent of volume. In the example above, 1 m3 of soil (e.g. with a depth of 1 m, and a surface area of 1 m2) contains 0.150 m3 of water (e.g. with a depth of 150 mm = 0.150 m and a surface area of 1 m2). This results in a soil moisture content in volume percent of:

Thus, a moisture content of 100 mm/m corresponds to a moisture content of 10 volume percent.

Note: The amount of water stored in the soil is not constant with time, but may vary.