Our current best estimate is that the western Grand Canyon in Arizona began to be excavated by river erosion about 6 million years ago. The greatest depth of the Grand Canyon is about 1.6 km.
a. What is the mean (average) rate that the Grand Canyon has been eroded into the Colorado Plateau during the past 6 million years, expressed in millimeters per year?
b. If erosion of the Grand Canyon proceeded at that rate during the recent century, how much deeper is it today than it was on the day you were born?
Answers: 3
Geography, 23.06.2019 13:30
Why did the united states lead a coalition to invade iraq in 1991? o a. there was a fundamentalist revolution in iraq. o b. iraq had invaded iran. o c. an oil embargo had started in the middle east, o d. iraq had invaded kuwait.
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Geography, 24.06.2019 10:00
Informatii despre riul nistru dup algoritmul pozitia pe continent originea denumirii lungimea izvorul gura de varsare afluentii directia riului caracterul cursului activitatea de model are regimul. de inghet variatia nivelului so volu! mul de apei tipul de alimentatie importantanta pentru om unitatile de relief strabatute caderea riului
Answers: 2
Our current best estimate is that the western Grand Canyon in Arizona began to be excavated by river...
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