Human and Environment Interactions

The Green Revolution• In the 1960s, farmers

began using better fertilizers and pesticides (bug sprays) to increase food production.

Pros and Cons• Pros• More Crops and Less

Famines• Higher Populations

• Cons• Dangerous Chemicals got

into the environment• Erosion as more land was

used for farming

Results of Increased Population

• Increased populations led to an increase in urbanization (cities) and industrialization• By 2005, 3.5 billion

people lived in cities. • 7 billion people live

in the world today!

Results of Urbanization• Urbanization leads to

localized pollution, diseases spread, and increased temperatures (in cities – all the concrete!)• And as previously

mentioned, hazardous chemicals get into the environment (last week’s local issue!)

Effects on Wildlife• These developments endanger wildlife because

people tear down natural habitats to make homes and businesses.

Natural Resources

• As we utilize the natural resources in increasing industrialized regions, we pollute the world,

poisoning more environments and killing more animals.