Most air breathing fish are facultative air breathers that avoid the energetic cost of rising to the surface and the fitness cost of exposure to surface predators.
32.
Either air breathing or rocket to tether could save a great deal of fuel per flight, and would permit for both a simpler vehicle and more cargo.
33.
""'Serrulina " "'is a genus of air breathing land snails, terrestrial pulmonate gastropod mollusks in the family Clausiliidae, the door snails, all of which have a clausilium.
34.
Individual fish have been observed to breathe air at regular intervals of about 20 minutes, with air breathing accompanied by a distinct loud burp made in the air.
35.
Also in 1959 Pyrene acquired Roberts McClean who in 1931 introduced self-contained compressed air breathing apparatus to the UK and these two companies merged under the Pyrene Panorama flag.
36.
Regulators responsible for cleaning up the air breathed by about half of California's population want to phase out the most commonly used dry cleaning solvent, saying it endangers public health.
37.
One study looked at 26 species representing eight families of non-air breathing fishes from the North American great plains, and found that all but four of them performed ASR during hypoxia.
38.
The only treatment Sea World could give the dolphin was to bidn the wound and hope for recovery, as surgery on a free-swimming, air breathing dolphin was not an option, they said.
39.
In the air breathing vertebrates it is used as a scaffold for formation of cellular bone made by osteoblasts, and then it is removed by osteoclasts, which specialize in degrading mineralized tissue.
40.
The federal government sued seven giant electric companies in the Midwest and the South on Wednesday, accusing the utilities of defying anti-pollution regulations and illegally contaminating the air breathed by millions of Americans.