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Assertion: Modern taxonomic studies provide more accurate grouping of various organisms. Reason: Modern taxonomic studies are based on external and internal structures along with the structure of cell, development process and ecological informations.

(a) What are the various ways in which a chemical equation can be made more informative ? Give examples to illustrate your answer. (b) Write balanced chemical equation from the following information : An aqueous calcium hydroxide solution (lime water) reacts with carbon dioxide gas to produce a solid calcium carbonate precipitate and water.