Tag: waste and its management

Solid waste, such as plastics, metals, and chemicals, is primarily dumped on land, leading directly to the contamination of the soil.

Tundra receives very little precipitation, around 25 cm year, mostly in the form of snow. The area is covered by snow for most part of the year. The highest summer temperature is $12^0$

Plants require water for the metabolic actions which is absorbed by the roots of the plants. The total water which is poured in the soil is not available to the plants.bThe total water content present in the soil is called hollard. Chresard is 75% of capillary water, water actually available for plants so that they can absorbed for their growth. Echard is remaining water. Therefore, correct relationship between them is Chresard + Echard = Hollard or Chresard = Hollard - echard. Thus, the correct answer is option B.

Introduction of an undesired component in the natural ecosystem is called as pollution. Wastes like plastic, chemicals, industrial effluents etc., causes damage to the natural micro flora of soil. Due to this soil pollution is lead.

Presence of unwanted contaminant in soil is called soil contamination. The deposition of pesticides on fruits and vegetables lead to its accumulation in fatty tissues of the host. This phenomenon is called bio accumulation.

The toxicity of pesticides is affecting the human health due to excessive accumulation of the pesticides in the food. Pesticides mixed with water are non-biodegrable in nature, due to which various water borne diseases are occurring in humans. 

Explanation: Overgrazing, over cropping and or deforestation can lead to desertification the spread of desert like lands due to these human activities accelerating natural erosion of soil.

Presence of unwanted contaminant in soil is called soil contamination. Non-biodegradable chemical pesticides are the largest source of soil pollutant.  organo-chlorides are group of insecticides based on chlorinated hydrocarbons (organochlorines).

The definition provided describes the introduction of harmful substances into the soil, which is the standard definition of soil pollution.

Xenobiotics are the unwanted chemicals or particles of compounds which are found in the regions where generally they are not present. These are the foreign particles like the herbicides, pesticides, agrochemicals like fertilizers, etc. These are the chemicals which might interact with the bacteria and other microorganisms in the soil. This might affect the absorption of nutrients by the plants.