1. (a) Describe the three parts of a passive continental margin. (b) Describe the parts of an active continental margin. 2. Describe the overall topography of the ocean floor. 3. Approximately what...

1. (a) Describe the three parts of a passive continental margin. (b) Describe the parts of an active continental margin.

2. Describe the overall topography of the ocean floor.

3. Approximately what percentage of Earth’s fresh water is frozen in ice caps and glaciers? About what percentage is in groundwater? About what percentage is in streams and lakes?