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Making a 'burp' bottle
Fit a bottle or flask with a single-hole stopper which carries a funnel. Put the stopper firmly in the bottle and then pour water into the funnel. The bottle will-'burp' at usual intervals.
Minerals: Our bones and teeth contain large amounts of calcium. An adult has a total of about 1 kg of calcium and a baby has about 30g in their bones. So, during the period o
Why are clouds White? Why does a day have 24 hours? Answer: A cloud is a visible accumulation of very tiny water droplets or solid ice that float in the air. Clouds are usuall
What minerals attract lightning? Ans) Big structures and things that are metal attract lightning, also trees do. In fact, anything that is metallic having mineral may seem
Explain the Nuclei or Ganglia Deep within the cerebral hemispheres are groups of nerve cells called nuclei or ganglia which act as relay stations, where impulses are passed fro
Prevention of disease: Now that we know that infectious diseases are caused by microbes, it should be possible to prevent diseases by controlling their transmission and proper
1. Explain the difference between society and culture. 2. What is the difference between Structural Functionalist Theory and Symbolic Interaction Theory? 3.Explain the differ
how to show air contains carbon dioxide
Explain the Mucous Membrane This layer is lined by the epithelial cells. Parts of the tract which are subject to mechanical injury, the layer consists of stratified squamous ep
Explain Cholecystokinin - Movements of Gall Bladder Cholecystokinin: Active contraction of gall bladder during digestion is due to the hormone cholecystokinin. Acid extracts o
Poisonous and Infectious Substances : These are the substances liable to cause death or serious injuries to health, if swallowed or inhaled or allowed to come in contact with skin
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