The Planet… Man and the Enviroment…
Big Bang Theory In the Universe… all matter and energy were compressed to an extraordinary density… In the Universe… all matter and energy were compressed to an extraordinary density… …scientists think that there was a big explosion… whats its name? …scientists think that there was a big explosion… whats its name? … according to the Big Bang Theory after the explosion the universe started its expansion… … according to the Big Bang Theory after the explosion the universe started its expansion…
The Paleozoic: an ancient period… … millions of years ago One supercontinent… One supercontinent… By endogenous forces, this mass of land was divided into seven continents… By endogenous forces, this mass of land was divided into seven continents… They are still moving… while glaciers are withdrawing… They are still moving… while glaciers are withdrawing…
Mankind… Human beings seem to appear on the planet 30,000 years ago… Human beings seem to appear on the planet 30,000 years ago… They developed and changed… They developed and changed… Fossils recollected by scientists proved this evolution… Fossils recollected by scientists proved this evolution…
Charles Darwin… Darwin was a British scientist who laid the foundations of the theory of evolution and transformed the way we think about the natural world. Darwin was a British scientist who laid the foundations of the theory of evolution and transformed the way we think about the natural world. To lay the foundations (key-phrase) To lay the foundations (key-phrase) Theory of Evolution… Theory of Evolution…
Evolution, according to Darwin, means… the Survival of the Fittest All plants and animals (man) go through (UNDERGO) changes and mutations in order to adapt to the enviroment in which they live All plants and animals (man) go through (UNDERGO) changes and mutations in order to adapt to the enviroment in which they live The more a creature could adapt to its enviroment the greater chance it had of living The more a creature could adapt to its enviroment the greater chance it had of living This means natural selection which led to the survival of the fittest… This means natural selection which led to the survival of the fittest…
Human Beings evolved from Apes… We are the most intelligent and enterprising… We are the most intelligent and enterprising… We always wanted to explore and understand the reality around us… We always wanted to explore and understand the reality around us… We want to improve our living conditiond… We want to improve our living conditiond… …this have a huge impact on the enviroment… …this have a huge impact on the enviroment…
Desire to improve means science and technology… …impact on the habitat… …impact on the habitat… Resources… Resources… 1. Perpetual 2. Renewable 3. Non-renewable
An example: Deforastation… Logging companies… Logging companies… Bulldozers… Bulldozers… Huge cutting of trees (firewood and wood for the building industry)… Huge cutting of trees (firewood and wood for the building industry)… Savage destruction of forests… Savage destruction of forests… EFFECTS ON: EFFECTS ON: GLOBAL CLIMATE GLOBAL CLIMATE AGRICULTURE AGRICULTURE WATER SCARCITY WATER SCARCITY POLITICAL INSTABILITY POLITICAL INSTABILITY
THE END… (or hope) Fossil-fuel-based system… Fossil-fuel-based system… … global renewable-energy- based economy! … global renewable-energy- based economy!