How do lighthouses signel night vs day?

What materials were used to build the Parthenon? What completion of the Eric canal allowed ships to travel? Where is the Norris City Community Museum Association in Norris City Illinois located? How does the ocean connect to any of the lakes in Michigan? What can change the direction or deflect surface currents? What are some major landmarks in lansing? Looking for an animated movie where a kid writes on a Stonehenge like formation then is transported to a futuristic city where robots chase him another kid helps him? How did the use of pointed arches change cathedreals? What is pembrokeshire coast known for? What is the name of the Indians that owend the Grand Canyon before it was named a national park? Why do conifer needles decompose slowly on the forest floor? What is the name of the long lake in south-central can you D what is the name of the long lake in south-central Canada? What is an advantage of a solid stream nozzle? What is the tone in the poem pete at the zoo? What 3 types of stone did they used to build the Washington Monument? When was Craig-y-Nos Castle created? Why are animals in living trees good conductors? How long is the Wolf River? What is the proper name for a castle gate? What can happen to your body if you have too much water?