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.
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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.