If you always travel by subway, you seldom surface other than at your stop.
Although rainforests make up only two percent of the earth's surface, over half the world's wild plant, animal and insect species live there.
poor road surfaces
Now, one and a half billion more human beings can live on the earth's surface, supporting themselves by working for others.
They finally started to asphalt that road again. It was about time! You could only cycle zigzagging there if you didn't want your wheel to get buckled because of the holes in the road surface.
Goods are the great travelers over the earth's surface, far more than humans, which means that hardly an inhabited spot on the globe is untouched by trade.
The surface of a balloon is not an Euclidean space, and therefore does not follow the rules of Euclidean geometry.
Japan may appear to be peaceful and tranquil on the surface but the fact is that there are a lot of deep-rooted problems.
The joke about the chicken crossing the road to get to the other side is an example of "anti-humor": meant to be funny because, on the surface, it is not.
Well he looks odd on the surface ... but he's even odder on the inside. "You're really not helping me there."
Being active at night may relate to the behavior of seals, which feed at night on various fish that come up closer to the surface.
Large-scale surface currents are already known to exist, and major currents below the ocean surface, too, are being found.
The seals surface more frequently then, so a bear's chance of catching one at a breathing hole is greater after nightfall.
We would like to be treated as regular people and the doll is a means for us to be able to bring this topic to the surface.
These special characteristics explain its preference for still-hunting (lying motionless beside a seal's breathing hole, waiting for one to surface).