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The buddy may get into difficulty due to inattention or incompetence, and require a rescue that is hazardous to the rescuer. The buddy may get into difficulty and mishandle the situation or panic, creating an incident that is hazardous to both divers. Diving with a buddy is known to be competent and who can be trusted to behave responsibly. [62]
Hydrogen sulfide is a chemical compound with the formula H 2 S. It is a colorless chalcogen-hydride gas , and is toxic, corrosive, and flammable, with trace amounts in ambient atmosphere having a characteristic foul odor of rotten eggs . [ 11 ]
The symptoms of poisoning vary depending on substance, the quantity a dog has consumed, the breed and size of the mammal.A common list of symptoms are digestion problems, such as vomiting, diarrhea, or blood in stool; bruising and bleeding gums, nose, or inside the ear canal; behavioral changes, such as lethargy, hyperactivity, and seizures; unusual items found in the dog's stool.
P333+P313: If skin irritation or a rash occurs: Get medical advice/attention. P334: Immerse in cool water [or wrap in wet bandages]. P335: Brush off loose particles from skin. P335+P334: Brush off loose particles from skin. Immerse in cool water/wrap in wet bandages. P336: Thaw frosted parts with lukewarm water. Do not rub affected areas.
On wet rocks or logs. When crossing streams, rivers, lakes, and other bodies of water, which can be dangerous due to poor visibility, uneven surfaces, smooth and algae or moss-covered rocks, and strong currents. The tops of waterfalls are especially dangerous because of fast moving water and smooth, slanted rocks.
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Corrosion may occur where stale sewage generates hydrogen sulfide gas into an atmosphere containing oxygen gas and high relative humidity. There must be an underlying anaerobic aquatic habitat containing sulfates and an overlying aerobic aquatic habitat separated by a gas phase containing both oxygen and hydrogen sulfide at concentrations in excess of 2 ppm.
Divers must avoid injuries caused by changes in pressure. The weight of the water column above the diver causes an increase in pressure in proportion to depth, in the same way that the weight of the column of atmospheric air above the surface causes a pressure of 101.3 kPa (14.7 pounds-force per square inch) at sea level.