Salt is obtained from Sea Water
Oil is obtained from Oil Wells underground
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water from rivers
I got only this
2 water : Obtained From Ground etc
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1. salt (sea water)
1. water - from river
2.salt -from sea
bread and salt
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two ingredients in our food that are not obtained from plants are animals are edible algae specially mushroom and Spirulina ...
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Explanation:WE GET SALT WHICH IS OBTAINED BY WATER (SOMETIMES)
AND WATER WHICH WE HAVE TO PUT, WE GET IT FROM RIVERS AND ALL WATER RESOURCES. THANK U HOPE IT HELPS
Friend i am not clear with the question
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1st case we can produce sound in and vacuum room
2 nd case we can produce sound in a normal room .
we observe that we cannot hear in the vacuum but we can hear sound in the normal room.
proves that sound needs medium.