What can you do in abyssal?

Why do life-forms in the deep ocean have to have unusual adaptations? What is the purpose of the Panama Canal? How long is the Essex river blackwater? Why do tropical rain forest plants make good house plants? What of these refers to a raised level area that is often cut by a steep canyon? What is the percentage of gas on top of Mt. Everest? What is a barefoot beach party? When did the Atlantic Ocean gets its name? What is a dry sea called? What instrument is in castle on a cloud? What is the longest first name in English? Why is the blesbokspruit wetland important? How does the Scientific Revolution and Enlightenment compare the way people thought and lived then and now? Are they going to rebuild six flags in New Orleans? Why is Arlington sacred ground? How fast does the river thames go? Covered with cordgrass in the wetlands? What has many cities located along it's borders? What is a piece of land with sea all around? How long do tsunamis last in the Pacific Ocean?