Entrance Exams
Govt. Exams
Disease spread increases with population density, making it a density-dependent factor. Natural disasters are density-independent factors.
Biomagnification is the process where persistent pollutants like DDT accumulate in higher concentrations as you move up the food chain.
Jim Corbett National Park (originally Hailey National Park) in Uttarakhand was India's first national park, established to protect tigers.
Mutualism benefits both organisms. Nitrogen-fixing bacteria receive carbohydrates from legumes while providing usable nitrogen.
Secondary succession occurs after disturbance to an existing ecosystem where soil remains intact, allowing faster recovery.
The Western Ghats is one of the world's 34 biodiversity hotspots with over 7,400 species of plants, many endemic to the region.
Biodiversity hotspots are regions with high concentration of endemic species and exceptional species diversity, like Western Ghats in India.
CFCs from refrigerants and aerosols release chlorine atoms that catalytically destroy ozone molecules in the stratosphere.
Fungi are primary decomposers that break down dead organic matter. Earthworms are detritivores, not true decomposers.
In a forest, one large tree (producer) supports many insects and parasites, creating an inverted pyramid of numbers.