https://padlet.com/hannah_skeens500/f0egps9pp2co3o0u for Big History Project en-us 2020-11-05 17:53:00 UTC 2020-11-05 18:30:56 UTC hello@padlet.com hannah_skeens500 https://padlet.com/hannah_skeens500/f0egps9pp2co3o0u/wish/895135271 This was 3.5 billion years ago. This started with prokaryote formed deep in the ocean. The ocean had these massive vents the gave them chemical and heat energy. Some cells went to the surface and they evolved to use the sun for energy. This process led to the spread of life in a lot of places. ]]> 2020-11-05 17:56:41 UTC https://padlet.com/hannah_skeens500/f0egps9pp2co3o0u/wish/895135271 hannah_skeens500 https://padlet.com/hannah_skeens500/f0egps9pp2co3o0u/wish/895165336 This was 2.5 billion years ago. They had tiny organs called organelles. As more of these began to grown prokaryote began to die because oxygen was toxic for them. This is important because these are the cells we are made of. ]]> 2020-11-05 18:02:59 UTC https://padlet.com/hannah_skeens500/f0egps9pp2co3o0u/wish/895165336 hannah_skeens500 https://padlet.com/hannah_skeens500/f0egps9pp2co3o0u/wish/895192911 This was 1 billion years ago. When eukaryotes came together they made more complicated organisms. The new organisms had billions of cells that worked together. As they worked together they were able to adapt to new things. ]]> 2020-11-05 18:08:45 UTC https://padlet.com/hannah_skeens500/f0egps9pp2co3o0u/wish/895192911 hannah_skeens500 https://padlet.com/hannah_skeens500/f0egps9pp2co3o0u/wish/895209776 This was 500 million years ago. The new multicellular organisms needed a way to be able to communicate with the other cells, so this was the job for special nerve cells. Some organisms had clusters of cells at the head that went down the spinal cord therefore making the first brains. The organisms that had brains could do a lot more than the ones without them. ]]> 2020-11-05 18:12:20 UTC https://padlet.com/hannah_skeens500/f0egps9pp2co3o0u/wish/895209776 hannah_skeens500 https://padlet.com/hannah_skeens500/f0egps9pp2co3o0u/wish/895233073 This was 475 million years ago. Some organisims moved from the ocean to the land and saw they could thrive there. In order to do that they had to develop a new type of skin so they didn't dry out. Other ones had to find a way to breathe without being in the water. All of the organisms had to adapt and find new ways to reproduce. ]]> 2020-11-05 18:17:20 UTC https://padlet.com/hannah_skeens500/f0egps9pp2co3o0u/wish/895233073 hannah_skeens500 https://padlet.com/hannah_skeens500/f0egps9pp2co3o0u/wish/895256829 This was 250 million years ago. This began when animals came on land and turned into reptile which then turned into mammals. Mammals are warm blooded unlike all the other species at the time. They have fur and they also don't lay eggs they give birth. ]]> 2020-11-05 18:22:38 UTC https://padlet.com/hannah_skeens500/f0egps9pp2co3o0u/wish/895256829