Notes and Study material for Exams
Factors affecting Photosynthesis There are three main factors affecting photosynthesis and several corollary factors. The three main are: Light irradiance and wavelength Carbon dioxide concentration Temperature. Total photosynthesis is limited by a range of environmental factors. These include the amount of light available, the amount of leaf area a plant has to … Read more
Corrosion is defined as an attack on a material as a result of chemical, frequently electrochemical reaction, with the surrounding medium. According to this definition, the term corrosion can be applied to all materials, including non-metals. But in practice, the word corrosion is mainly used in Conjunction with metallic materials. Why do metals corrode? Apart … Read more
Soil Health Card Scheme (SHCS): Revitalizing India’s Soils Introduction India’s vast agricultural landscape, the backbone of its economy and food security, faces a critical challenge: declining soil health. Decades of intensive farming practices, coupled with climate change, have led to soil degradation, impacting crop yields and threatening the livelihoods of millions of farmers. Recognizing this … Read more
Soil conservation planning on watershed basis Watershed development activity was taken up in the country prior to independence in the state of Maharashtra (then Bombay state) as a scarcity relief work during drought years in which contour binding programme for conservation of moisture and control of soil erosion was mostly undertaken, After independence, … Read more
Depletion of Natural Resources– Metals, Minerals — Conservation Policy All the materials and energy essential for the survival and welfare of living beings including humans-are provided by nature. They are called Natural Resources. A thing becomes resource only when it is used by humans to perform a function. Man lives in nature and … Read more
SoilSoil texture Soil texture is the relative proportions of sand, silt, and clay in a soil. It is one of the most important physical properties of soil, as it affects many other soil properties, such as drainage, fertility, and aeration. Soil texture is determined by the size of the soil particles. Sand particles are the … Read more
Soil consists of rock and sediment that has been modified by physical and chemical interaction with organic material and rainwater, over time, to produce a substrate that can support the Growth of Plants.” Soils are an important natural resource. They represent the interface between the lithosphere and the Biosphere – as soils provide nutrients for … Read more
Soil Pollution is the Contamination of the soil by human and natural activities which may cause harmful effects on living beings. This may be due to the following factors. (i) Industrial wastes: Industries are the major causes for soil pollution Textiles, steel, paper, Cement, oil, dyeing and other industries are responsible for soil pollution. Toxic … Read more
Water Resources Management Water Resources in India India accounts for about 2.45 per cent of world’s surface area, 4 per cent of the world’s water resources and about 16 per cent of world’s Population. The total water available from Precipitation in the country in a year is about 4,000 cubic km. The availability from surface … Read more
Biodiversity Conservation: A Vital Lifeline for Our Planet The Earth’s biodiversity, the vast array of life forms that inhabit our planet, is a treasure trove of ecological, economic, and cultural value. From the towering redwoods of California to the vibrant coral reefs of the Great Barrier Reef, each species plays a crucial role in maintaining … Read more