Question

photographs obtained by the nasa probe mariner 9 revealed a vast canyon on mars that has since been named valles marineris. select the true statements concerning the valles marineris. it stretches from the north pole to the south pole of mars. it was created by an asteroid impact. it is a fracture in the crust. its widest point is wider than the grand canyons width. it is longer than the distance between boston and washington, d.c.

Explanation:

Valles Marineris is a vast canyon on Mars. It is a crustal - fracture. It is extremely large, with its widest point wider than the Grand Canyon and longer than the distance between Boston and Washington, D.C. It does not stretch from the North Pole to the South Pole of Mars and was not created by an asteroid impact.

Answer:

It is a fracture in the crust.
Its widest point is wider than the Grand Canyon's width.
It is longer than the distance between Boston and Washington, D.C.