Soil forms through the weathering of rocks and organic matter decomposition. Over time, physical and chemical processes break down rocks, and living organisms contribute organic material, creating the layers and nutrients essential for fertile soil.
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Cutting a large forest area leads to habitat loss, soil erosion, reduced biodiversity, and increased carbon dioxide levels. It disrupts ecosystems, contributes to climate change, and diminishes the natural resources and services forests provide.
Seasons on Earth are caused by its tilt on its axis and its orbit around the Sun. This tilt leads to varying angles of sunlight and day lengths throughout the year, creating different seasons.
Gravity is the force that governs the movement of celestial bodies in the solar system. It keeps planets in orbit around the Sun and influences the paths of moons, comets, and asteroids.
Planets and stars can be distinguished by their appearance. Planets usually shine with a steady light and move against the background of fixed stars. Stars twinkle due to atmospheric disturbances, while planets do not.
The shell is significant in a snail’s life cycle as it provides protection and support throughout its development. It also helps in regulating moisture levels and serves as a retreat during vulnerable stages.
Shells do not move because they are hard, non-living structures. Movement in living creatures is generally facilitated by their muscles and other biological systems, while the shell remains stationary for protection.
You can use a sieve to separate puffed rice from chana dal. Since puffed rice is lighter and has a different size compared to chana dal, a sieve with appropriate mesh size will allow the puffed rice to pass through ...
Solubility-based separation methods rely on dissolving substances in solvents, while density-based methods depend on differences in mass per unit volume. Solubility methods include filtration, while density methods include centrifugation and sedimentation.
Acting out the water cycle involves students role-playing stages like evaporation, condensation, precipitation, and collection. This interactive activity helps illustrate how water moves through its cycle, making the concept engaging and memorable.