Answer:
1.Climbers go to some of the (remotest) corners of the world.
2.They also visit some of the (most dangerous) places in the world.
3.Could there be a (more exciting) hobby?
4.The (coldest) weather is usually at the mountain's summit.
5.Modern gear makes it (easier) to climb shear cliffs than it once was.
6.The rockslide moved (more quickly) than I could rappel down.
7.I don't think I've ever been (frightened).
8.Luckily I had the (best) climbing partner with me, my Dad!