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CA (620,000)
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ESS102H1 (100)
Lecture

ESS102H1 Lecture Notes - Soil Retrogression And Degradation, Ozone Depletion, Acid Rain


Department
Earth Sciences
Course Code
ESS102H1
Professor
Bridget Bergquist

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2. GLOBAL CHANGE
The modifications of the Earth System’s components and of the interactions between these components, both natural and human-induced, are
referred to as Global Change. Change is not a recent phenomenon. It is a characteristic aspect of the Earth System.
Types of Global Change:
Gradual – takes place over long periods of geologic time (millions to billions of years)
Catastrophic – takes place rapidly in geologic time (from seconds to centuries)
Unidirectional (evolution of solid Earth, evolution of atmosphere, evolution of life)
Cyclic (supercontinent cycle, sea-level cycle)
TECHNOSPHERE: sum of industrial, technological and agricultural components of human activity. The technosphere affects the natural surface system of
the Earth.
INTRODUCTION
Second half of the course: The Human Impact
The human population is rising and it requires ENERGY and
RESOURCE CONSUMPTION.