On a certain map, every 1 cm represents 10 km on Earth's surface. Which ratio represents the scale of the map, which shows how the map
measurements compare to actual ones on Earth's surface?
A. 1:1,000,000
B. 1:1,000
C. 1,000,000:1
D. 1:10

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?