This and other simulations show that five key spots at large ridges and plateaus drive most of the upwelling. (sciencenews.org)
All giraffids in this group feature four horn - like skull protuberances known as ossicones, two over the eyes and two larger ridged ossicones at the back of its head. (sciencedaily.com)
The difference between snow tires and snow chains is that the traction of the chains adds large ridges to the outside of the tires. (palmendodgechryslerjeepofracine.com)