Substances that are released in blood vessels during decompression sickness produce signs and symptoms that are similar to those of an allergic reaction.
Decompression sickness is a medical condition in which nitrogen, dissolved in the blood as well as tissues through increased pressure, creates bubbles as pressure drops. Its symptoms are fatigue, pain in muscles and joints, etc.
However, in more serious cases symptoms may be the same as seen during a stroke and may also include numbness, shakiness, spinning, breathing problem as well as chest pain.
Decompression sickness can be treated with oxygen and recompression therapy. Checking the depth and time span of dives and the speed of ascension can aid in the prevention of decompression sickness.
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Answer: color, cleavage, clarity, durability, and crystal system
Explanation: color - distinctly green color that ranges between bluish green and slightly yellowish green.
cleavage - one direction of imperfect cleavage
clarity - almost every natural emerald has eye-visible characteristics that can be inclusions, surface-reaching fractures, or healed fractures. Treatments to fill the fractures with oils, waxes, polymers, flux and other materials to reduce their visibility has been common practice for hundreds of years.
durability - emerald is very hard, but almost all specimens have inclusions and surface-reaching fractures that compromise their durability
crystal system - hexagonal
Answer:
Bison have limited type of natural predators.
Explanation:
A Bison is a land animal which has a similar appearance to that of a buffalo. They are known to be fast,agile and strong.
A prairie habitat is an ecosystem that is considered part of the temperate grasslands, savannas, and shrublands biome by ecologists due to the similarities in the temperate climates, moderate rainfall and composition of grasses, herbs, and shrubs instead of trees as the main and common vegetation type.
This habitat consists of animals and reptiles such as bison, coyote, antelope, badger, elk, prairie dog, otters, foxes,lizards.
This represents a limited number of predators for the Bison
