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2) Because it is directly absorbed into the blood, no need of breaking down (digestion) for them. and directly transported to cells for producing ATP (energy currency of cell)
3) During day time, Land gains heat faster than sea so the air above land becomes warm and rises up, cooler air above sea rushes to replace the warm air above land leading to 'sea breeze'.
4) Similarly, during night time, Land cools faster than sea. So, the air above sea is warmer than of land. So air flow from land towards sea to replace warm air rising above sea.
5) Antacids are actually basic compounds, so they neutralize the acid during acidity.
6) When an ant bite it injects 'formic acid'. Calamine solution contains basic compounds like Zinc carbonate which neutralizes the formic acid.
7) Factory wastes often contains acid substances. If we allow them to reach water bodies it may lead to death of aquatic animals living in them, so they need to be neutralized before disposing them.
8) Setting of curd is a chemical change because a new substance(lactic acid) is formed. The curd formed has a different taste than the original substance. Also, once the curd is formed, milk cannot be re-obtained from it. It is an irreversible change.
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