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An ecosystem is a self-sustaining functional unit of the biosphere where living (biotic) and non-living (abiotic) components interact with each other.
: Ozone layer depletion and waste management strategies. our environment class 10 pdf
Ans: A food web consists of multiple interconnected food chains. If one organism in a web is removed, the others can adjust by switching food sources. In a linear food chain, removing one link destroys the entire chain.
| | Environmental Impact (from chapter) | Smarter Alternative | |----------------------------|------------------------------------------|--------------------------| | Binge-watching on a large TV / gaming on console | High electricity use → more fossil fuel burning → CO₂ & global warming | Stream on energy-efficient devices; turn off when not in use | | Buying collectibles (action figures, movie merch) | Often made of non-biodegradable plastic → landfill for centuries | Choose wooden or recycled-material merch; support eco-friendly brands | | Outdoor parties / movie nights with disposables | Plastic plates, glitter banners, synthetic decor → harm decomposers in soil | Use biodegradable plates, cloth decor, LED lights (less energy) | | Listening to loud music on portable speakers | Batteries (especially non-rechargeable) contain heavy metals → toxic for ecosystems | Rechargeable batteries + solar charger | | Online shopping for gadgets or game accessories | Excessive packaging (thermocol, plastic wraps) → non-biodegradable waste | Buy from sellers using minimal/recycled packaging | : Specialized short notes by Prashant Kirad on
: The 10% law and unidirectional energy transfer.
Most students read this chapter just for exams, but here’s how it applies to your daily life and fun activities : Ans: A food web consists of multiple interconnected
Ans: The ozone layer acts as a protective shield in the stratosphere, absorbing the harmful UV-B and UV-C radiations from the sun, preventing them from reaching the Earth's surface.