APES: Chapter 1 What is Environmental Science? What are resources? What is pollution?
What is Environmental Science? • Environmental Science interdisciplinary study of human relationships with other organisms and the nonliving physical environment
Watch This! http://www.youtube.com/watch?v=H-XpUacV-TE Mercy Mercy Me - Marvin Gaye 1971 : What’s Going On Album
What is the study of Env. Science ? • Environmental Science tries to establish principles and model how the natural world functions AND THEN use these principles to develop solutions to environmental problems caused by man.
What is a resource? • Resource anything from environment that meets the needs/wants of Man • defined based on replenishment time • Fig 1-6 p.9
Perpetual = renewed continuously • Renewable = replenished during lifetime, can be depleted but regenerated in human lifespan • Nonrenewable = cannot be replenished during lifetime, fixed stock, can be replenished on geologic timescale
Pollution any addition to air/water/food/soil that threatens health of organisms • MAJOR SOURCES: • Point Source = from single identifiable source • Nonpoint Source = from dispersed sources • p. 12 = Fig 1-9, Fig 1-10 Env. Problems + Causes
What are current issues at the heart of Env. Science? GLOBAL WARMING ENERGY SUPPLY and DEMAND
FOOD SUPPLIES OVERPOPULATION