Last seen: Jan 25, 2021
The factors responsible for the loss of grains during storage are: Abiotic factors like moisture (present in food grains), humidity (of air) and t...
Diseases in plants are caused by pathogens. To get rid of pathogens, some preventive measures and biological control methods are used as they are simp...
(c) Farmers use quality seeds, adopt irrigation, use fertilisers and use crop protection measures. Explanation: The condition where, farmers are u...
Effects of using manures on soil quality: The manures enrich the soil with nutrients. They provide a lot of organic matter (humus) to the soil an...
Nutrients which are found in the soil get dissolved in the water and is absorbed by the roots of the plants. The conducting tissue, xylem transport th...
Macro-nutrients are the essential elements which are utilized by plants in large quantities. As they are required in large quantities they are called ...
Desirable agronomic characteristics for crop improvement are as follows : Tallness and profuse branching are desirable characters for fodder crops...
Factors responsible for loss of grains, during storage and production are of two types: Biotic factors like rodents, pests, insects, etc. Abiotic...
Cereals give carbohydrates which provide energy. Pulses give proteins which build our body. Vegetables and fruits provide vitamins and minerals in add...
Role of forest in influencing the quality of Air : It helps in purifying the air by adding oxygen into it. It takes carbon dioxide gas during p...
If the human activities which lead to increasing levels of air, water and soil pollution are spread over wider areas then the pollutants will spread m...
We daily see weather reports on televisions and newspapers. These informations are actually recorded by meteorological laboratories present in differe...
All living organisms are directly or indirectly dependent on soil. Plants obtain water, minerals from the soil and prepare food for themselves and for...
Water is essential for life because : About 70% weight of human beings is due to water. All cellular processes take place in water as medium. Al...
Atmosphere is very important for sustaining life because: It contains various gases like O2, CO2, N2 which are required for various life processes...
Oxygen is present in free form like O2 (oxygen molecule), Ozone (O3) and combined form like oxides of metals and non-metals e.g., CO2, NO2, SO2, H2O.
Gases like CO2 and methane trap Sun’s radiation reflected from earth’s surface. This causes warming of atmosphere. This effect is called greenhouse ef...
(i) Burning of fuels like coal, petrol, diesel etc. (ii) Deforestation (iii) Human induced forest fires.
Two biologically important compounds that contain both oxygen and nitrogen are proteins and nucleic acids (DNA and RNA).
The three different states in which water is found during the water cycle are : solid (snow, ice), liquid (water) and gas (water vapour).