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-TEMercy 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

What is pollution?

• 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?

ENERGY SUPPLY and DEMAND

GLOBAL WARMING

OVERPOPULATION

FOOD SUPPLIES