Sea level rise/construction of buildings. Both A and B are correct
After the rise of Islam in the Hejaz, Arab culture and language were spread outside the Arabian Peninsula through conquest, trade and intermarriages between members of the non-Arab local population and the peninsular Arabs. The Arabic language began to serve as a lingua franca in these areas and dialects were formed.
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The biosphere is composed of all living organisms. Biosphere is a region of the earth's surface where all living organisms are able to live.
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