What clues suggest that the river acts as a "freight train" carrying rock out through the Grand Canyon?

today, in the deepest part of the Grand Canyon, the Colorado River flows past rocks that are 1.7 billion years old,flows, caused the widening of the canyon. Gathering speed and volume, piles of loose rock and soil that originate in a river's tributaries merge to form powerfully erosive debris flows, which are capable of dramatically affecting the surrounding terrain.

Explanation:

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

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lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation: