Solar irradiance Changes in the sun’s energy output would cause the climate to change, since the sun is the fundamental source of energy that drives our climate system. Studies show that solar variability has played a role in past climate changes, a decrease in solar activity is thought to have triggered the Little Ice Age… Continue reading CAUSES OF CLIMATE CHANGE: Natural
Author: abrar
INDOOR AIR POLLUTION
Indoor Air Pollution-Meaning: If indoor air is contaminated by smoke, chemicals, smells, or particles. Unlike outdoor air pollution, the effect of indoor air pollution is health-related and less of an environmental issue. Causes: In colder regions, building and heating methods make use of airtight spaces, less ventilation, and energy-efficient heating. Sometimes synthetic building materials… Continue reading INDOOR AIR POLLUTION
Secondary Air Pollutants
Secondary Air Pollutants Smog is a kind of air pollution. Its types are: Classic smog results from large amounts of coal burning in an area caused by a mixture of smoke and Sulphur dioxide. Modern smog does not usually come from coal but from vehicular and industrial emissions that are acted on in the atmosphere… Continue reading Secondary Air Pollutants
Primary Air Pollutants
Primary Air pollutants POLLUTANTS SOURCES EFFECTS/IMPACTS Carbon Dioxide Natural Sources: Exhalation through organisms. Forest fires and volcanoes, hot springs and geysers It is freed from carbonate rocks by dissolution in water and acids. Carbon dioxide is soluble in water, it occurs naturally in groundwater, rivers and lakes, in ice caps and glaciers and also… Continue reading Primary Air Pollutants
Quiz: Biodiversity and conservation
On this page, we will provide you with all the MCQs related to biodiversity and conservation in India [qsm quiz=5]
BIOGEOCHEMICAL CYCLES
There is a circulation of chemical nutrients like oxygen, carbon, nitrogen, phosphorus, calcium, and water, etc. through the physical and biological world; between the atmosphere, hydrosphere, lithosphere, and biosphere. These cycles are known as biogeochemical cycles. These cycles are natural pathways of the circulation of essential elements of life. For the survival of the major… Continue reading BIOGEOCHEMICAL CYCLES
What are the Trophic Levels?
Each organism occupies a particular position in a food chain depending on its feeding relationship with other organisms. This position is known as the trophic level. It is important to note that the amount of energy decreases at successive trophic levels. When an organism dies it is converted to detritus. It then serves as an… Continue reading What are the Trophic Levels?
Ecological Pyramids
Ecological pyramids are the diagrammatic representations of the feeding relationship and energy transfers in the ecosystem. They are of three types: Pyramid of Numbers, Pyramid of Biomass and Pyramid of Energy. Pyramid of Numbers: It represents the relationship between number of individuals of primary producers and consumers at different trophic levels. It can be upright… Continue reading Ecological Pyramids
How does the Energy Flow in an Ecosystem?
In simplest terms, the behaviour of energy in an ecosystem is called energy flow. The flow of energy in the ecosystem is always unidirectional (linear). The energy flow obeys the first and second law of thermodynamics. Laws of Thermodynamics (Rudolf Clausius and William Thomson) 1st Law: Energy cannot be created or destroyed but can be… Continue reading How does the Energy Flow in an Ecosystem?
Food chains and Food webs
Food Chains A food chain describes how energy and nutrients move through an ecosystem. It basically shows who eats what in the ecosystem. Thus, the transfer of energy from the source in plants through a series of organisms by eating and being eaten constitutes food chains. At each transfer, a large proportion of energy is… Continue reading Food chains and Food webs
