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Timeline: The Evolution of Life on Earth

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Samit Wells85

on 11 May 2013

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Transcript of Timeline: The Evolution of Life on Earth

1.2 Billion Years Ago:
Multicellular Organisms
(Red Algae) 4.5 Billion
Years Ago 580 - 500 Million Years Ago:
The First Animal
- Ediacara Biota 400 Million Years Ago:
The First Insect -
Rhyniognatha Hirsti 300 - 200 Million Years Ago:
Pangea [Formed and Drifted Away] 225 Million Years Ago:
The First Dinosaur &
The First Mammal (Adelobasileus) 65 Million Years Ago:
Dinosaurs Extinct 63 Million Years Ago:
The First Primate 3 Billion
Years Ago 2 Billion
Years Ago 1 Billion
Years Ago Now 195,000 Years Ago:
Homo Sapien Appeared 4.5 Billion Years Ago:
Earth Formed 3.6 Billion Years Ago:
Life Began 3.4 Billion Years Ago:
The First Photosynthetic Bacteria They absorbed near-infrared rather than visible light and
produced sulfur or sulfate compounds rather than oxygen. 3 Billion Years Ago:
Cyanobacteria Produced
Oxygen 434 Million Years Ago:
The First Plant 340 Million Years Ago:
The First Amphibian 2 Billion Years Ago:
Eukaryotes 900 Million
Years Ago 500 Million
Years Ago 800 Million
Years Ago 700 Million
Years Ago 600 Million
Years Ago 400 Million
Years Ago 300 Million
Years Ago 200 Million
Years Ago 100 Million
Years Ago 560 Million Years Ago:
The Earliest Fungi 580 Million Years Ago:
Life Invaded Land The Evolution of Life on Earth By Samit, Kaito, Peter, Pattarawat: Grade 9 485 Million Years Ago:
The First Vertebrate
(Jawless Fish) 100 Million
Years Ago 50 Million
Years Ago Now Now 10 Million
Years Ago 2.58 million years ago
the great ice age 485 Million Years Ago:
The First
Mass Extinction Now 1 Million
Years Ago About 3.5-3.8 million years ago, Earth's atmosphere was made up of Nitrogen, Ammonia, Methane and Hydrogen
Pond of chemical were fueled by the energy from the sun, volcanoes, and lightning.
The chemical in the pond reacted, and form amino acid which later will form protein and form organism. 4 Billion
Years Ago Primordial Soup Bubble models may start in the oceans which is mixed with all the chemical.
As the bubbles travel up the surface, the chemicals get mixed by pressure and temperature.
When it goes to the surface or the atmosphere, lightning strikes, and the sun bakes.
Then those chemicals would go back to the ocean.
They repeat this, until they get their nucleic acid and Phospholipids.
Nucleic acid and Phospholipids form a microsphere
Amino acids would form proteins and become coacervates
coacervate is a mix of organic molecules, such as proteins, lipids, and nucleic acids, that form a stable colloid similar to cells.. Bubble Model Theory The Miller-Urey experiment was the experiment stimulated the condition of the earth's atmosphere.
The experiment used water (H2O), methane (CH4), ammonia (NH3), and hydrogen (H2).
The chemical were sealed in tube and flask. then the chemical were heated up and ran electric current.
After 1-2 weeks Urey observe that the chemical had form organic compound.
Miller prove that inorganic matter can form organic compound. 2% formed the Amino Acids, which would become the proteins.
The process is called Abiogenesis or the process in which living organic carries from inorganic matter. Miller-Urey Experiment The Starting Point of Sexual Reproduction
[Increasing The Rate of Evolution] Endosymbiosis The endosymbiosis theory describes how a large host cell and ingested bacteria could easily become dependent on one another for survival, resulting in a permanent relationship. Over millions of years of evolution, mitochondria and chloroplasts have become more specialized and today they cannot live outside the cell 130 Million Years Ago:
The Rise of Flowering Plants
[Angiosperms] 350,000 - 30,000 Years Ago:
The Living Time of Neanderthals 750 Million Years Ago:
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