Our Relationship with the Environment Over Time

A. Hunter-Gatherer EraHunter- Gatherers: people who collect plants & hunt wild

animals• Least impact on environment• Did prevent growth in grasslands, overhunted some large

mammals, & spread plants to new areas

Giant ground sloth Bison

B. Agricultural Revolution: ~10,000 years ago to present•Agriculture: growing, breeding, & caring for plants &

animals used for food, clothing, etc.• Lead to exponential population growth•Grasslands, forests & wetlands destroyed for farmland

soil & water loss

C. Industrial- Medical Revolution: ~1700s +1. Started using fossil fuels for energy & mass production of goods2. Inventions: light bulb, steam engine, factory machinery, vehicles3. Cities grew4. Revolutions in health care (antibiotics, vaccines, water treatment) longer lives

• 1900s: began using plastics & synthetic chemicals• Pollution (air, water & land) increased

D. Globalization (Information & Technology) Revolution: 20th century – present

•Technology helps us understand env. problems

•Rapid exchange of data & idea

•BUT can homogenize Earth’s surface (make all the same)• Same language• Same food• Same organisms – loss of diversity

Our Environment Through Time-line1. Create a chronological timeline based on the

different era/revolutions discussed in notes2. MUST include Information & Technology

Revolution, Agriculture Revolution, Hunter Gatherer Era, Industrial-Medical Revolution

3. For each era/revolution, include:1. NAME of era/revolution2. Description of change during revolution3. Environmental affect of revolution4. Image or drawing to illustrate revolution

4. Be creative, colorful and neat!