Part,  Chapter, Paragraph

1    I,     2.  7    |    million, occupying 25% of the earth’s surface. And then they
2    I,     2.  7    |        is evident when observing earth from space: the area comprising
3    I,     2. 10.  3| relations and the perspective of earth as a “common village” is
4  III,    10.  3.  1|        280 nm). UVR reaching the earth's surface is largely composed