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.
The discovery of aquaporins, water channels made of a transmembrane protein.
Relationships between direction of flow of blood and water or air in different vertebrates.
Fogel’s Map of a Potential Water Transport Network for 1890
Work of Running Water
Bone Surface Markings: Head
What is the maximum velocity (in km/s) of a photoelectron emitted from a surface whose work ...