Basal sliding phenomenon helps glaciers move down the valleys of the southern Alps. Basal sliding is the action of the glacier moving down across the bed because of the melting of water below the ice moving as the lubricant.
World hunger I believe this project is
A. Different fossils on different continents. There were the fossils of the same or very similar species found on different continents that could not of swam across an ocean/walk there.
1:50 000 because 1/100 is only one of a hundred 1:50 is one and a half of one hundred
