Environment Archives

Carbon Sink

March 12, 2023July 31, 2023 pcsclasses

Carbon Sink Carbon sink is a natural or artificial reservoir that absorbs and stores Carbon dioxide from the atmosphere. Why in the news? India has committed in its NDC – to create an additional carbon sink of 2.5 to 3 billion tonnes of CO2 equivalent through additional forest and tree cover by 2030. The functions of Carbon sink: Carbon sink absorbs and stores CO2 from the atmosphere. Carbon sink help to reduce the amount of CO2 in the atmosphere and migrate the negative effects of climate change. Creating new carbon…

Tiger Reserves in India

June 17, 2021July 13, 2024 pcsclasses

Tiger Reserves in India Project Tiger Important facts about Project Tiger: Project Tiger was launched by the Government of India in the year 1973 to save the endangered species of tiger in the country. Starting from nine (9) reserves in 1973, the number is grown up to fifty-four (54). There are 54 tiger reserves in India, governed by Project Tiger. The Project Tiger is administered by the National Tiger Conservation Authority (NTCA). Project Tiger is an ongoing Centrally Sponsored Scheme of the Ministry of Environment, Forests, and Climate Change providing…

World Environment Day

June 5, 2021April 28, 2023 pcsclasses

World Environment Day In 1972, the UN General Assembly designated 5 June as World Environment Day (WED). The first celebration, under the slogan “Only One Earth” took place in 1974. In the following years, WED has developed as a platform to raise awareness of the problems facing our environment such as air pollution, plastic pollution, illegal wildlife trade, sustainable consumption, sea-level increase, and food security, among others. Furthermore, WED helps drive change in consumption patterns and in national and international environmental policy. The theme of World Environment Day 2021 The…

BIOGEOCHEMICAL CYCLES

April 20, 2021October 26, 2022 pcsclasses

BIOGEOCHEMICAL CYCLES Introduction: The flow of energy is linear in ecosystems but its opposite nutrients go through a cyclical process. The nutrients are locked in the dead remains of organisms and come back into the soil by decomposers. The recycling of these nutrients is called the biogeochemical or nutrient cycle. As we know about the biosphere, it is a closed system i.e. nutrients are neither imported nor exported. There are two manners of the biogeochemical cycle: Reservoir pool: The reservoir pool stores large amounts of nutrients as atmosphere or rock.…

RAMSAR- Wetland Sites in India

March 25, 2021July 13, 2024 pcsclasses

RAMSAR- Wetland Sites in India What is the RAMSAR Wetland Site? The Ramsar Site is a wetland site designated for international importance by the Ramsar Convention. Introduction of Ramsar Convention: Ramsar Convention (established in 1971 by UNESCO, and came into force in 1975) is an international treaty for the conservation and sustainable utilization of wetlands that recognizes the fundamental ecological functions and economic, cultural, recreational, and scientific values of these sites. The name Ramsar was given after the name of the city Ramsar in Iran, the treaty signed there in…

Pollution

September 22, 2020December 23, 2023 pcsclasses

Pollution Pollution is the unfavorable alteration of our environment, largely as a result of human activities (Southwick; 1976) We can explain it as ‘Pollution is an undesirable change in physical, chemical, and biological characteristics in our air, land, and water that is harmful or may harm future organisms’. Actions such as construction, transportation, and manufacturing, not only deplete natural resources, but even produce a large number of waste that leads to pollution of air, water, soil, and oceans, which also causes global warming and acid rain. What are pollutants? Pollutants…

Important Environmental Laws Of India

September 19, 2020July 18, 2023 pcsclasses

Important Environmental Laws Of India The environment in Indian Constitution The Constitution of India under Part IVA (Art 51A-Fundamental Duties) casts a duty on every citizen of India to protect and improve the natural environment including forests, lakes, rivers, and wildlife, and to have compassion for living creatures Our constitution under Part IV (Art 48A-Directive Principles of State Policies) stipulates that the State shall endeavor to protect and improve the environment and to safeguard the forests and wildlife of the country. National Legislation Related to the Environment Here we discuss…

Pyramids In Ecosystem

September 15, 2020October 26, 2022 pcsclasses

Pyramids In Ecosystem The pyramids in the Ecosystem are graphic representations of trophic levels showing the relationship between different organisms in an ecosystem. Types of Pyramids in Ecosystem There are three types of pyramids: Pyramid of number Pyramid of biomass Pyramid of energy Pyramid of number A pyramid of numbers represents the number of organisms at each tropic level for example in grassland the number of grasses is more than the number of herbivores that feed on them and the number of herbivores is more than the number of carnivores.…

Ecosystem

September 9, 2020October 26, 2022 pcsclasses

Ecosystem: The term ecosystem was first used in 1935, by British ecologist Arthur Tansley. Interaction of living and non-living of an area with each other, i.e. interacting organisms of an area together with the non-living constituents of the environment form an ecosystem. This shows the relationship between organism and their environment. the sum of all these living and non-living in an area is termed an ecosystem. Types of the ecosystem There are two types of ecosystem: Artificial– crop-fields, and aquariums are human-made. Natural– forests, ponds, and lakes. Components of Ecosystem…