Write three causes of soil pollution?
Causes of soil pollution include industrial waste, agricultural chemicals (pesticides and fertilizers), and improper disposal of household waste.
What is the effect of cutting trees on soil?
Cutting trees can lead to soil erosion as the roots of trees help in binding the soil. Without trees, the soil becomes more susceptible to erosion by wind and water.
Why is soil testing necessary? Explain.
Soil testing is essential to assess the nutrient content, pH level, and other characteristics of the soil. This information helps in determining the fertility of the soil and guides farmers in applying the right amount of fertilizers for optimal crop growth.
What is weathering of rocks?
Weathering of rocks refers to the breakdown of rocks into smaller particles over time due to physical, chemical, and biological processes.
Name the different components of the soil?
The main components of soil are air, water, minerals, and organic matter (humus).
In which type of soil will most of the rainwater flow away?
Sandy soil allows water to pass through quickly, so most rainwater will flow away from the surface.
What will be the effect on the crops if there is no porosity in the soil?
If soil lacks porosity, water drainage and air circulation will be poor, leading to waterlogged conditions. This can adversely affect plant roots, causing oxygen deprivation and hampering nutrient uptake, ultimately impacting crop growth.
Which type of soil is not suitable for the growth of plants and why?
Rocky soil, which lacks the necessary nutrients and has poor water retention, is not suitable for plant growth. Additionally, soil with high salinity or extreme pH levels may also be unsuitable for most plants.
