Answer: The name Austria derives from a Germanic word 'austro' which means 'east'.
Answer:
c. oxygen
Explanation:
Oxygen -
The most abundant element of the Earth's crust is the oxygen , which constitutes to 46.6 % .
Oxygen is mainly found in the combined form as , phosphates , carbonates .
It has many application in the field of medicine , industries and commercial purpose .
In hospital it is used for the treatment of respiratory diseases .
Hence , the most abundant element on planet earth is c. oxygen .
Answer:
Environmental pollution is the introduction of harmful materials caused by pollutants into the environment. Pollutants are the various impurities that have found their way into the environment due to both human activity and natural causes, thus leading to pollution. These chemical compounds are harmful to both life and the environment.
Explanation:
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