(new) i need on some human geography questions

Why does sweden and norway have steep roofs

What's erosion? a. the breakdown of rock into smaller pieces b. the removal of weathered products from rock c. a change in rock resulting from exposure to water d. a chemical change in rock that weakens it

Which example gives the relative location of a place? 50 main street 33 degrees n latitude, 91degrees w longitude east of the library 1600 pennsylvania ave., washington, d.c.