Answer to Question 1
Runoff channels from old rivers and outflow channels from catastrophic flooding in the distant past. Recent mudflows down the sides of some canyons and crater walls suggest occasional eruptions of liquid water persist to this day, as imaged by the Global Surveyor. The Rovers in 2004 also found clear evidence of sedimentary rocks formed under water at both the landing sites, on opposite sides of the globe.
Answer to Question 2
This statement does not make sense because it uses the term light-year as a length of time, rather than as a distance.
Spanish water dog (Perro de agua español).
Wegener’s Evidence for Continental Drift
Mucosal surface of the small intestine.
Better land and water management and appropriate crop selection can help eliminate hunger
The xy plane is painted with a uniform surface charge density which is equal to 40 nC/m2 . ...
Root uptake of soil water