What does understory mean in the rainforest mean?

What is a Desert in north west Australia? What is James and Oliver phelps address? When was Retreat into Art created? How many bricks are in the Empire State Building? Why is the Anthropology Museum so relevant to Mexican culture? Is it prohibited to drink alcohol in Arches National Park? How old do you have to be to ride the Tower of Terror? Is a roller coaster ride faster than a car? Is the abrevatoin for desameter dam? Is it true that the Cadillac mountains are in acadia national park? Can elderly people go to Alton towers? What is the depth of the Madeira River? What is the name of the imaginary line that runs north and south through the Rocky Mountains? Does Universal Studios Orlando have bumper cars? What causes the disappearances in the Bermuda Triangle? How industrialization has changed the lives of people in deserts? Why is the river thames famous? What place can we visit in Japan? What year did Tuvalu's sea level start rising? Where is the Abel Tasman National Park?