Cells, either floating, as in the blood, or fixed, like those in the cancellated structure of bone, already referred to.
2
The navicular bone consists normally of compact and cancellated tissue arranged in certain proportions, the compact tissue without, and the cancellated within.
1
The navicular bone consists normally of compact and cancellated tissue arranged in certain proportions, the compact tissue without, and the cancellated within.
The professor worries that rising CO2 levels could drive enough warming to destabilize the Earth's clathrate reserves.
2
In our world now, clathrates exist in Arctic permafrost and in the ocean near the continents.
3
Another source could be icy subsurface clathrates, or molecular cages that harbour methane but can release it in bursts over time.
4
The presence of clathrates, ice-like lattice structures that can trap gases, could just as easily explain what we see on the moon.
5
Dubbed SCHLIP, for Submarine Clathrate Hydrate Landslide Imaging Project, the investigations continue and will involve drilling into the landslide during the next voyage.
6
Webster suspects that reservoirs of methane lie deep under the surface of Mars, perhaps in water crystals called clathrates, and leak the gas continuously.