<span>The scientific study of the human population is demography</span>
Thailand, is the only country that is free from European colony.so the answer is A
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The biosphere is the portion of the earth that supports living things.
Environmental protection is the third pillar and to many, the primary concern of the future of humanity. It defines how we should study and protect ecosystems, air quality, integrity and sustainability of our resources and focusing on the elements that place stress on the environment