What continent is sienna in?

Which has more energy a radio photon or a X-ray photon? How many years would it take to reach the sun from earth traveling at 70MPH? What type of scientist studies natural hazards such as volcanoes and tornadoes? What factor prevents cells from becoming the size of giant blobs that consume city blocks? Is the energy involved in photosynthesis and cellular respiration recycled? Who uses yippie kiya? What would be the noon sun angle on June 21st in Tampa? What are the six stages of gelatinisation? The earth and the moon travel together around what? How shallow is the North Sea? What is the medical term meaning poison produced by an organism? Why ozone layer is it currently in danger? What are the useful materials that are found in nature such as water minerals and trees called? What slight shift away from the resting membrane potential in a specific region of the plasma membrane is called a? Is the surface of Venus's bumpy or smooth? How many fluoride ions will combine with magnesium to form magnesium fluoride? What is a fluke? How does second wind happen? What are the names of elements found in grain alcohol? What role did water play in the Midwest?