Our Relationship with the Environment Over Time A. Hunter-Gatherer Era Hunter- 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 slothBison

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 goods 2. Inventions: light bulb, steam engine, factory machinery, vehicles 3. Cities grew 4. 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: 20 th 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

1.Create a chronological timeline based on the different era/revolutions discussed in notes 2.MUST include Information & Technology Revolution, Agriculture Revolution, Hunter Gatherer Era, Industrial-Medical Revolution 3.For each era/revolution, include: 1.NAME of era/revolution 2.Description of change during revolution 3.Environmental affect of revolution 4.Image or drawing to illustrate revolution 4.Be creative, colorful and neat!