1.How did Wegener work out what Pangea looked like? 2.Outline the two main observations that led Wegener to propose the theory of continental drift.
3. Fossils of sea creatures have been found near the top of Mount Everest (8848m above the sea level). How do you think they could have got there?

Which of the following compounds would be expected to have the strongest ionic bonds? a)the compound that has b)the largest ions with the greatest charge c)the compound that has d)the largest ions with the least charge the compound that has the smallest ions with the greatest charge the compound that has the smallest ions with the least charge