Notes and Study material for Exams
Addition of certain substances to the water such as organic, inorganic, biological, radiological, heat, which degrades the quality of water so that it becomes unfit for use. Putrescibility is the process of decomposition of organic matter present in water by Microorganisms using Oxygen. Water having DO (dissolved oxygen) content below 8.0 mg/L may be … Read more
Digestive System Introduction The respiratory and circulatory systems work together to provide cells with the Oxygen they need for cellular Respiration. Cells also need glucose for cellular respiration. Glucose is a simple sugar that comes from the food we eat. To get glucose from food, digestion must occur. This process is carried out … Read more
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
–2/”>a >DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”> Oceans tides An ocean tide refers to the cyclic rise and fall of seawater. Tides are caused by slight variations in gravitational attraction between the Earth and the moon and the Sun in geometric relationship with locations on the Earth's surface. Tides are periodic primarily because … Read more
Volcanoes and sea-scarps. This great variety of relief is largely due to interaction of tectonic, volcanic, erosional and depositional processes. At greater depths, the tectonic and volcanic phenomena are more significant processes. Continental Shelf: This is a gentle seaward sloping surface extending from the coasts toward s the open sea. In all, about 7.5% of … Read more
–2/”>a >DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”> Blood makes up about 8% of the human body weight. It contains erythrocytes, leucocytes, thrombocytes (platelets) and plasma. The volume Percentage of all blood cells in the whole blood is about 45% of adults (hematocrit). The rest consists of liquid plasma (e.g. water, plasma proteins, electrolytes … Read more
Manures – Elements Required In Plant Growth Manures are organic materials that are applied to SoilSoil to improve its fertility. They can be made from a variety of sources, including animal manure, plant matter, and compost. Manures provide plants with essential nutrients, such as nitrogen, phosphorus, and potassium. They also help to improve Soil Structure … Read more
SoilSoil Profile A Soil profile is a vertical section of the soil that shows the different layers of soil. The layers of soil are formed by the interaction of the parent material, climate, organisms, and time. The parent material is the material from which the soil is formed. It can be rock, sand, or other … Read more
The South Equatorial Current is a surface current in the Pacific, Atlantic, and Indian Oceans that flows eastward near the equator. It is part of the global conveyor belt, a system of ocean currents that helps to distribute heat around the globe. The South Equatorial Current is strongest in the western Pacific Ocean, where it … Read more
The Falkland Current is a cold, northward-flowing current in the South Atlantic Ocean. It is part of the Antarctic Circumpolar Current, and it flows along the eastern coast of South America from the Strait of Magellan to the Falkland Islands. The current is caused by the Earth’s rotation and the difference in temperature between the … Read more