Environment and Ecology

Grassland and Tundra Ecosystem

Grassland and Tundra Ecosystems An ecosystem is a system consisting of living and non-living elements. Living organisms interact with each other while maintaining equilibrium within an ecosystem. A. G. Tansley coined the word ‘ecosystem’ in 1935. Terrestrial ecosystems include deserts, grasslands, forests, tundra, swamps, etc. Aquatic ecosystems include oceans, lakes, rivers, wetlands, etc. Both of […]

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Environment and Ecology, UPSC

Functions of the Ecosystem: Energy Flow through Food Chain

Functions of Ecosystem Ecosystems are complex, open, and dynamic systems. They perform certain functions. These are- Energy flow through the food chain Nutrient cycling (biogeochemical cycles) Ecological succession or ecosystem development Homeostasis (or cybernetic) or feedback control mechanisms Energy Flow Ecosystems properties that make them dynamic are energy flow and food chains They connect the

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Environment and Ecology, UPSC

Environmental pollution

What is Environmental Pollution? Environmental pollution may be defined as unwanted material in the environment due to human activities. The agents which cause environmental pollution are called pollutants. It can be described as a chemical, biological, or physical substance unintentionally released into the environment which is directly or indirectly harmful to humans and other living

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Environment and Ecology, UPSC

Environmental Protection Act 1986

Environmental Protection Act, 1986 The Indian government enacted the Environment Protection Act  This umbrella legislation merged the provisions of the Water (Prevention and Control of Pollution) Act of 1974 and the Air (Prevention and Control of Pollution) Act of 1981. Within this structure of the legislation, the government established Pollution Control Boards (PCBs) to halt,

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Environment and Ecology, UPSC

Environmental Impact Assessment

Environmental impact assessment (EIA) is a decision-support tool for those selecting whether to approve a development project. It gives information on the potential implications of projects to those responsible for the decision. The purpose of an Environmental Impact Assessment is to evaluate the potential ecological, socioeconomic, and wellness consequences of any project. This assessment indicates

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Environment and Ecology, UPSC

Environment Vs Development

DEVELOPMENT Development can be defined as growth, progress, positive change, or the addition of physical, economic, environmental, social, and demographic components. The purpose of development is to raise people’s living standards and quality of life while maintaining the environment’s resources. It also aims to produce or grow regional social and economic benefits. Environment versus Development

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Environment and Ecology, UPSC

Energy flow in the Ecosystem: Trophic levels, Food Web and Ecological Pyramids

Trophic levels Depending on their feeding relationship with other species, organisms occupy a location in the natural setting or a group. Organisms occupy a particular position in the food chain known as their trophic level based on the source of their nutrition or food. Producers are in the first trophic stage, followed by herbivores (primary

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Environment and Ecology, UPSC