What do deltas have?

When was the Grand Canyon skywalk made? What national park is nearest to London? How do you build a house in the Amazon rainforest? How do you build a canal? What lighthouse lost its lifeboat on the night of the robbery in massachusets? Which two oceans border southern Africa? What is the location of the Kalahari Desert? What were the daily activities that went on at San Luis Obispo? Is th13teen scary? When did the Egyptians stop building the pyramids? A museum in whose memory can be visited at Hyannis? What time period was it called when there were kings and queens and castles? What relationship zooxanthellae have with corals? What river features found along river thames? What is the altitude of a hot desert? Where is an oasis located? How is beetle adapt in desert? Name the sea that separates Southern Europe and Africa? What stretch of water connects the chukchi sea and bering sea? What desert does the nile river run trough?