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.
Irish Water Spaniel
Ripples in Water
The overlapping relationship among research, evidence-based practice
Gaussian surface in the absence of a dielectric
Water provides adequate hydration
Experimental evidence of cytoplasmic localization in an amphibian oocyte.