Though astronomers 100 years ago thought they saw "canals" on mars, images from revealed canyons and riverlike structures that are evidence that surface of mars in the ancient past. missions have flowed on the

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Where is the map from the question?

If a particular resource is not useful or needed then the price would be considerably low. once that resource is needed the price or value will raise depending on how useful or needed it is especially if the resource is low in quantity, the consumers would pay whatever they have to, to get that material.