Page 77 - Geosystems An Introduction to Physical Geography 4th Canadian Edition

Biosphere
the polar regions experience deficits, emitting more energy than they receive. also, the annual pulse of seasonal change varies the distribution of energy during the year.
Earth’s atmosphere acts as an efficient filter, absorbing most harmful radiation, charged particles, and space debris so that they do not reach Earth’s surface. In the lower atmosphere the unevenness of daily energy receipt gives rise to global patterns of temperature and the circulation of wind and ocean currents, driving weather and climate. Each of us depends on these interacting systems that are set into motion by energy from the Sun. these are the systems of part I.
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