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It just keeps getting thinner and thinner, so that could then mean its lava because the lava could be getting dryer and harden so then there is not as much lava to keep flowing. There also looks like there could be volcanos near the lava, which means it could of exploded and created that channel.

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It just keeps getting thinner and thinner, so that could then mean its lava because the lava could be getting dryer and harden so then there is not as much lava to keep flowing. There also looks like there could be volcanos near the lava, which means it could of exploded and created that channel.

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if it was water it would branch off, but it doesn't

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if it was water it would branch off, but it doesn't

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has triangle of sediment rock at end of channel

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has triangle of sediment rock at end of channel

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there are conglomerate rocks, and those are formed by sediments which are carried by flowing water.

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there are conglomerate rocks, and those are formed by sediments which are carried by flowing water.

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It´s water because at the end of the channel, there is a different type of rock, that looks like sediment. Sediment comes from little rocks that the water picks up and brings into a different area. Also, it could be water because the channel is carved into the ground, but the lava would dry and kind of go on top of the ground, instead of carve into the ground. Also, it has a lot of little channels that contribute into it, or those channels could be coming out of the main channel, which water tends to do.

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It´s water because at the end of the channel, there is a different type of rock, that looks like sediment. Sediment comes from little rocks that the water picks up and brings into a different area. Also, it could be water because the channel is carved into the ground, but the lava would dry and kind of go on top of the ground, instead of carve into the ground. Also, it has a lot of little channels that contribute into it, or those channels could be coming out of the main channel, which water tends to do.

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I believe it is lava because it begins to get thinner,thinner which can mean that it is lava.

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I believe it is lava because it begins to get thinner,thinner which can mean that it is lava.

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if it was water it would spread like a triangle. 

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if it was water it would spread like a triangle. 

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There is a triangle shaped form at the bottom of the channel  which has both rocks made from lava and water.

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Lava doesn't go as far as water and the channel on Mars isn't as long as a water channel would be.

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Lava doesn't go as far as water and the channel on Mars isn't as long as a water channel would be.

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There are many little channels, or streams, that feed into the main channel.

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There is a triangle which is the shape water makes when it flows down.

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There is a triangle which is the shape water makes when it flows down.

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There is a triangle based land form at the bottom of the channel that looks like it could have been made by water. 

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There is a triangle based land form at the bottom of the channel that looks like it could have been made by water. 

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there's little channels connected to one big channel and if it's water it will branch off and make smaller ones 

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there's little channels connected to one big channel and if it's water it will branch off and make smaller ones 

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water could,ve been there then lava could,ve flowed

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water could,ve been there then lava could,ve flowed

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the type of rock formed by water was conglomerate 

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the type of rock formed by water was conglomerate 

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Mars has rocks for each water and lave around that channel so still it is hard to tell which it is, so it could be both water and lava.

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Some evidence that tells u that the channel on mars is formed by lava is that there is rocks and it looks like a grey/black color on the pictures and i dont think water could turn that color

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Some evidence that tells u that the channel on mars is formed by lava is that there is rocks and it looks like a grey/black color on the pictures and i dont think water could turn that color

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it stops randomly, meaning that the water could've soaked into the ground

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It might be lava because there is a lot of volcanoes on mars and all of the water on mars is frozen any ways the current just cuts of and water does not do that but lava does just cut off and stop moving when it cools down.

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It might be lava because there is a lot of volcanoes on mars and all of the water on mars is frozen any ways the current just cuts of and water does not do that but lava does just cut off and stop moving when it cools down.

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The channel has branches rooting out of the main channel

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if it was lava it would stay in a almost straight line but most of the time is would look like a blob.

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if it was lava it would stay in a almost straight line but most of the time is would look like a blob.

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It doesn't flow in a straight line lava does

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It doesn't flow in a straight line lava does

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you can see it is thin and lava only has one main channel.

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It could also be water because of the rock the rock the rover found. The type of rock the rover found is a special rock mad out of water. The rock the found is a rock made out of a bunch of little rocks. The rock is made out of water. The only way the rock could be there is because the channel is made out of water. There could be water on mars. 

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It could also be water because of the rock the rock the rover found. The type of rock the rover found is a special rock mad out of water. The rock the found is a rock made out of a bunch of little rocks. The rock is made out of water. The only way the rock could be there is because the channel is made out of water. There could be water on mars. 

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the evidence for lava is that the channel keeps thinning and it's near a mountain range and maybe those mountains could be volcanoes that could have made the channel. 

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the evidence for lava is that the channel keeps thinning and it's near a mountain range and maybe those mountains could be volcanoes that could have made the channel. 

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witch leads to water going further than lava because lava would just start to harden and over time would just stop

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lava would go in a almost straight line

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lava travels slower than water therefore the lava would stop and the water would keep on going

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lava travels slower than water therefore the lava would stop and the water would keep on going

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Water usually branches out and the channel on Mars branches out.

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Water usually branches out and the channel on Mars branches out.

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the channel is a straight line and we know lava makes mostly straight channels

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some evidence that tells u that the channel on mars could be formed by water is the color of the channel on mars is kind of grey/black color and the grey kinda looks like water.

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some evidence that tells u that the channel on mars could be formed by water is the color of the channel on mars is kind of grey/black color and the grey kinda looks like water.

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The channel on Mars doesn't go that far like water would on Earth, but rather how far lava would go. Water tends to branch out more than lava would and by observing the channel it looks like it branched out. 

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The channel on Mars doesn't go that far like water would on Earth, but rather how far lava would go. Water tends to branch out more than lava would and by observing the channel it looks like it branched out. 

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the elements near the channel suggest that it was water but the channel is not long suggesting it's lava

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the elements near the channel suggest that it was water but the channel is not long suggesting it's lava

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the type of rocks formed by lava is basalt.

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the type of rocks formed by lava is basalt.

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they both go straight and move a different way but they move at different speeds and globs

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they both go straight and move a different way but they move at different speeds and globs

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there are existing volcanoes on mars but not water

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there are existing volcanoes on mars but not water

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lava turns to stone and the image looked like stone kinda

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there are pebbles at the bottom which could have been from water flowing

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There is evidence of frozen water deep in the craters of mars.

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The channel on Mars is branching out.

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there are basalt rocks and conglomerate rocks.

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there are basalt rocks and conglomerate rocks.

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Water is gnarled and loopy. Very similar to the channel on Marz

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there are conglomerate rocks near the channel

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there are conglomerate rocks near the channel

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Since the elevation is higher at the top of the channel that means it could be a volcano that exploded with lava making a channel.

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the evidence for water is that water has lines in it and lava does not

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the evidence for water is that water has lines in it and lava does not

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some evidence that tells you that the channel on mars could be formed by lava and water is that it has rocks on it and it is kind of a dark color but at the same time it could be formed by water because the color looks more like water and it looks kind of wet.

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some evidence that tells you that the channel on mars could be formed by lava and water is that it has rocks on it and it is kind of a dark color but at the same time it could be formed by water because the color looks more like water and it looks kind of wet.

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there is evidence where there were volcanoes on mars

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there is evidence where there were volcanoes on mars

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there is no clear evidence to prove it is one or an other. there are also no color to prove what one it is.

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The rocks found around the channel appear to be made of sediment. When a river flows it breaks down rocks into sediment, where as lava just melts the rocks.

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In many of the examples on page 30 show that most rivers curve. whether it is a lot or a little bit. I noticed that the channel that we are observing has the same curving route.

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basalt was found by the channel, so there has to be lava on mars

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basalt was found by the channel, so there has to be lava on mars

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another reason it could be lava is that if it were water it probably would have froze but lava cools down and probably formed the channel 

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another reason it could be lava is that if it were water it probably would have froze but lava cools down and probably formed the channel 

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It might not be water because water normally flows in to lakes, swamps, ponds, rivers, and the ocean. 

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It might not be water because water normally flows in to lakes, swamps, ponds, rivers, and the ocean. 

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the elevation is high where it starts and ends in a triangle like water channels on earth

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the elevation is high where it starts and ends in a triangle like water channels on earth

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lava makes an outline of were it was were as water  makes a DEEP indent and can create cnyons like thegrond conyon

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lava makes an outline of were it was were as water  makes a DEEP indent and can create cnyons like thegrond conyon

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most of mars is frozen water that used to go around mars

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It could be water because it is deeper and is less wavy

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It could be water because it is deeper and is less wavy

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i believe that it is lava because if you go to page 31 and look at the lava  model it looks like that

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i believe that it is lava because if you go to page 31 and look at the lava  model it looks like that

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The channel on Mars has very little similarities to the channel test for lava and has many similarities to the water test. (See MORE EVIDENCE FOR WATER)

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the triangle at the bottom of the channel looks as if it was made by water.

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I think that is lava because lava hardens and water doesn

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all the water is frozen under mars so how would it be water but there is a lot of volcano's 

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all the water is frozen under mars so how would it be water but there is a lot of volcano's 

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on mars surface so its probably lava the stream is also deeper that's more evidence of it being lava.

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there has not been water on mars for a long time and if the channel was created by water long ago the dusty surface of mars would cover the channel over

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there has not been water on mars for a long time and if the channel was created by water long ago the dusty surface of mars would cover the channel over

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lava looks like a red long blob that explodes 

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lava looks like a red long blob that explodes 

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Lava is the kind of substance that once it hardens it adds more layers to the Earth.