The draining lava left long, tube-like caverns. Of the four caves in this particular cluster, only Boyd Cave is now open to hikers. Arnold Ice Cave is filled with ice. Skeleton and Wind Cave were open to hikers until 2007, when they were gated closed to prevent vandalism and protect hibernating bats.
On the other hand, asthma is an ongoing chronic condition that has acute flare ups and chronic pulmonary insufficiency due to airway reactions that cause the bronchial tubes to be partially obstructed. This results in shortness of breath, chronic cough, frequent chronic bronchitis, chronic pneumonia and wheezing.
Different Triggers. The spectrum of triggers that cause COPD versus asthma reactions are also different. Asthma is usually made worse by exposure to allergens, cold air, and exercise, while COPD aggravations are largely caused by respiratory tract infections such as pneumonia and the flu.he two have similar symptoms. These symptoms include chronic coughing, wheezing, and shortness of breath. According to the National Institutes of Health (NIH), around 24 million Americans have COPD.