<u>ANSWER:</u>
The Grand Canyon was formed by erosion.
<u>EXPLANATION:</u>
- The Grand Canyon is a 'Steep-sided canyon' carved by the 'Colorado river'.
- The Grand Canyon is '446 km long', '29 km wide' and has a depth of over 1857 meters.
- The recent studies have showed that the 'Colorado river' and its tributaries ran through the 'area' about '5 to 6' million years ago.
- Since that time, there is constant erosion by Colorado river. In this way the 'Grand Canyon' was formed by 'erosion'.
A Tornado Forms in 4 Steps. Advertisement - Continue Reading Below. Precipitation should counter the updraft, but when winds blow precipitation out of the rising air, the updraft strengthens. When those tubes are ingested into the updraft, they become vertical and the storm acquires rotation, forming a supercell.
