take two similar green leaves apply grease on me leaf and leave the other free add 1or 2drops of acide on each leafe what kind of change do you observa from this
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A. 1) The leaf to which grease is applied is not effected with the acid. .I
2) The leaf to which grease is not applied is effected.
3) From the above activity we can conclude that mucus secreted by the walls of stomach protect it from the harmful effects of hydrochloric acid in the stomach.
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