The Evolution of Earth's Biodiversity by Madison Comly https://padlet.com/madisoncomly2026/go5vfjvdospoic3c About 4 billion years of change in the organisms inhabiting earth. en-us 2021-10-26 17:24:52 UTC 2021-11-08 18:31:12 UTC hello@padlet.com https://padlet.net/icons/png/1f30e.png 3.7 Billion Years Ago madisoncomly2026 https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1845832195 With an environment low in oxygen and high in methane, the Earth was not inhabited by the animals we know today. One of the first organisms on Earth were microbes or microscopic organisms. Scientists found traces of these organisms through carbon molecules. ]]> 2021-10-26 17:42:13 UTC https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1845832195 About 2.4 Billion Years Ago madisoncomly2026 https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1852043380 At least 2.4 billion years ago cyanobacteria became the first ever photo-synthesizers to live on Earth. They used sunlight to create energy and as a result, released oxygen. This caused a large increase in Earth's oxygen levels.  

 
]]> 2021-10-28 17:35:16 UTC https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1852043380 About 4.5 Billion Years Ago madisoncomly2026 https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1852055397 About 4.5 billion years ago the solar system settled into how we know it today. Gravity pulled gases and dust and combined them to crate a planet. That planet is the third closest to the sun and now known as Earth. ]]> 2021-10-28 17:40:26 UTC https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1852055397 2.7 Billion Years Ago madisoncomly2026 https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1859413984 About 2.7 billion years ago the first eukaryotic cells evolved. Eukaryotic cells have a nucleus where the genetic material is separated from the cytoplasm. Bacteria had been inhabiting earth for billions of years before this, however they were less complex. Making this a large step towards future evolution. ]]> 2021-11-01 17:25:25 UTC https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1859413984 800 Million Years Ago madisoncomly2026 https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1859434688 It is suggested by DNA evidence that sea sponges were the first animals on Earth. The oldest fossilized sea sponge can only be dated back to 700 million years ago,but it is believed that they evolved before that. These sea sponges also started building the first reefs. ]]> 2021-11-01 17:33:30 UTC https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1859434688 About 580 Million Years Ago madisoncomly2026 https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1859454407 Dickinsonia Costata were single-celled, flat, and circular-shaped,  aquatic organisms. Using the fatty molecules of these organisms scientists were able to discover their age. They lived about 580 million years ago during the Ediacaran period. ]]> 2021-11-01 17:40:39 UTC https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1859454407 600 Million Years Ago madisoncomly2026 https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870893006 The Charina was one of the most common organisms in the Ediacaran period. They attached themselves to the bottom of the sea floor. Although it had a leaf shape, scientists are still unsure it is is and animal, plant, or something else. ]]> 2021-11-05 22:12:58 UTC https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870893006 542 Million Years Ago madisoncomly2026 https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870904367 Trilobites appeared at the beginning of the Cambrian period. These marine animals flourished in this time. However, their population greatly decreased in the next succeeding period due to an increase in predators. ]]> 2021-11-05 22:27:12 UTC https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870904367 530 Million Years Ago madisoncomly2026 https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870909605 Anomalocaris in Greek is translated to "unusual shrimp", which is exactly what they are. These marine organisms lived 530 million years ago during the Cambrian period. They grew up to 6 feet long and are equipped with amazing eyesight, swimming skills, and spiked limbs. They went extinct during the mass extinction at the end of the Cambrian period. They are related to the Ophabinia. ]]> 2021-11-05 22:34:04 UTC https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870909605 535 Million Years Ago madisoncomly2026 https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870914932 The Opabinia also lived during the Cambrian period. They were marine animals with five eyes, a backwards facing mouth, and a long nose. They were small creatures that only grew to about 4 to 7 cm long.  It is believed they are related to ancestral arthropods. ]]> 2021-11-05 22:41:07 UTC https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870914932 299 Million Years Ago madisoncomly2026 https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870933271 The Edaphosaurus or ground lizard lived during the Permian period. These organisms are believed to be herbivores. This makes them the first plant-eating synapsid of the Permian period. ]]> 2021-11-05 23:06:49 UTC https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870933271 500 Million Years Ago madisoncomly2026 https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870937807 With the help of sea sponges coral reefs began to develop 500 million years ago during the late Cambrian period. These coral reefs are not like the large, extensive, and bright coral reefs we know today. They were simple, solitary organisms. ]]> 2021-11-05 23:12:39 UTC https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870937807 100 Million Years Ago madisoncomly2026 https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870947080 The Argentinosaurus is a herbivore that lived about 100 million years ago. It grew to be about 80 tons and 115 feet long. They were discovered in 1989 in Argentina, hence how they got their name. ]]> 2021-11-05 23:26:07 UTC https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870947080 56 Million Years Ago madisoncomly2026 https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870953447 The Eohippus live about 56 to 34 million years ago. These mammals are commonly known as the dawn horse. They are the first known ancestors of horses in the line of Eohippus, Olgiohippus, Merychippus, Pliohippus, and finally modern horse. They were about the size of a dog, only 30-60 cm tall. ]]> 2021-11-05 23:35:09 UTC https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870953447 130 Million Years Ago madisoncomly2026 https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870959581 About 130 million years ago flowering plants bloomed. The first of these plants are the Archaefructus. It is believed they grew near bodies of water.  They are closely related to aquatic ferns, sea grasses, and the modern water lily. ]]> 2021-11-05 23:44:34 UTC https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870959581 115,000 Years Ago madisoncomly2026 https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870968444 About 115,00 years ago the first Homosapiens developed. The first evidence was found in southern Africa in the late Stone Ages. The evolution of humans as we are now has been occurring for 30 million years, starting with ape. ]]> 2021-11-05 23:57:27 UTC https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870968444 Overview madisoncomly2026 https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870973383 Life on Earth has been evolving for billions and billions of years. From the start of Earth to the development of the human species and from mass extinctions to population spikes, the species inhabiting Earth have never stopped changing. It is important to protect our planet and make sure this process can continue for billions of years after us. ]]> 2021-11-06 00:04:05 UTC https://padlet.com/madisoncomly2026/go5vfjvdospoic3c/wish/1870973383