A young walrus rests on a small, thin and melting iceberg in the Bering Strait.

Global sea levels are rising. 1.3 million properties in England and Wales are classified as being in flood risk areas. Have a look at these pictures that show some of the problems.

What do you think is happening? What effect is it having on the global environment and why?

You can type your explanations into word processing software such as Word, or into a text editor such as Notepad. Save your notes and keep a printout if you want to. You can compare your ideas with other students or your teacher.