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The earth was formed 4.6 billion years ago. Then bactiria was released and they eventually gave out free oxygen. Then since there was oxygen animals could live causing the ice age. Then after all ice was gone the bactiria would turn into a plant. Then since humans live off oxygen given off by plants Primates could live on the earth.

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A cause and effect that I see on the timeline is the first life (bacteria) that ultimately effected in the human race.

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The earth was formed 4.6 billions years ago. The can bacteria that gave off oxygen. Then the earth built up living things from there.

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A cuase and effect I see on the timeline is that aphibions came and the came dinosuars

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A cause and effect I see on the time line is when water was created bacteria was created then and later animals creatures like dinosaurs roamed earth.

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Since the Earth was formed 4.6 billion years ago It released free oxygen that soon led to plants and the formation of other things.

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When the earth formed bacteria had caused other living things to form but it took billions of years to form other living things.

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When the earth formed bacteria had caused other living things to form but it took billions of years to form other living things.

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I think these events are all related because the creation of earth led to an atmosphere and hydrosphere which led to first life. So what i'm trying to say is that they all connect in a way.

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All related because they connect to each other.

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A cause and effect that happened was that since humans came to life the stone tools were made by them

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everything happened so another thing could come

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These events are all related to each other. They cause other events and changes to happen. It's a chain reaction.

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I think the results are related. All the things that happened formed because what came before it.

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I think the results are related. All the things that happened formed because what came before it.

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These events are all related because they all have to do with the formation of the Earth and the formation of life.

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When earth was formed there was no oxygen, but over time organisms formed that produced oxygen and then our planet flourished with life one of the things that came to life were humans

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I learned that the earth is very old and it took a very long time to have certain things

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i think they are that they are related because they are atmospheres 

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i think they are that they are related because they are atmospheres 

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The timeline is that the Earth is 4.6 billion years ago and oxygen and water had to come first.

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The timeline is that the Earth is 4.6 billion years ago and oxygen and water had to come first.

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I think they are all related to eachother

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They are all related because if one didn't happen, the others following it most definitely wouldn't have happened. For example, if oxygen didn't exist, us humans would not be alive right now.

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The timeline helped me understand when the first life came to earth

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Bacteria caused living things to form, but I took a long time for everything to come to earth.

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I think they happened separately because other features happened in different times.

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A cause of effect that happened was Since the Earth was formed 4.6 billion years ago It released free oxygen that soon led to plants. 

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A cause of effect that happened was Since the Earth was formed 4.6 billion years ago It released free oxygen that soon led to plants. 

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All of the things happened because of what happened before it.

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I think all of these events are related because multi cellular organisms would have to come first so then it could form an atmosphere so then life would be able to form.

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I think all of these events are related because multi cellular organisms would have to come first so then it could form an atmosphere so then life would be able to form.

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The events make other events happen and the life on Earth continues to evolve.

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I learned that the Earth is really old and that it took a long time to start forming living things and oxygen.

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I think it helped me learn that earth has been in the universe for a really long time and that it has evolved a lot from 4.6 billion years ago.

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i think they are related because when the next thing came then it allowed living things to come eventually 

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i think they are related because when the next thing came then it allowed living things to come eventually 

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bacteria had to come first before humans

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I see how things in earth evolution goes on. %00 million years ago is when most of earths evolution happened such as water and atmosphere coming first to make the planet we have today and let everything fall into place.

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In the past 500 million years earth started to do more land moving and animals.

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Related because they have and effect on eachother

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i think the that is all happened together because once one thing happens its kinda like a ripple effect and every happened after it

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I think these events happened separately because, many things had happened in different year.

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I think these events happened separately because, many things had happened in different year.

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it helped me learn that earth took a really long time to form things and to form humans

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Something that the timeline helped me understand about earths evolution is that it had formed billions of years ago but most of the events had happened in between 500 million years ago and today

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Something that the timeline helped me understand about earths evolution is that it had formed billions of years ago but most of the events had happened in between 500 million years ago and today

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I think the timeline helped me to understand earth's history and evolution because everyone knows that earth is billions of years old.

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I think the timeline helped me to understand earth's history and evolution because everyone knows that earth is billions of years old.

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the timeline helped me understand ripe effect everything happens so another thing can happen.

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the timeline helped me understand ripe effect everything happens so another thing can happen.

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I think that they happened separately that certain creatures came before dinosaurs because evolution grows on and things turn into each other over a long period of time.

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the event on the timeline acted like a chain recation

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it help because it helps you show how think/when happened

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it help because it helps you show how think/when happened

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Most of the things that really brought earth together happened in the last 500 million years.

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The events happened separately because they happened at different times of the earth´s history.

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It helped me understand that it takes millions of years for things to evolve into what it is today.

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The events happened separately because the events happened at different times. 

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The events happened separately because the events happened at different times. 

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The timeline helps us understand when different events happened and how old the earth is.