As humans ascend higher into the atmosphere, air density declines. While air composition remains similar, the drop in air pressure, and in return, air volume, effectively makes the respiratory system work much harder in order to supply the same levels of oxygen to the blood stream.
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Avocados are notoriously difficult to enjoy until ripe. Unripe avocados are hard, and generally bitter or bland. You can tell if an avocado is ripe by the firmness of the skin. Avocados that give slightly to the squeeze should be ripe.
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Sashimi is a delicacy from Japan, consisting of thinly sliced fresh raw fish. The dish is not specific to any particular type of fish, but rather preparation of the dish. Nearly all sushi is based on seafood, though very rarely it can include meat from terrestrial animals.
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Basketball backgrounds, called backboards, can be constructed of many types of material. The best construction materials for your hoop background depend upon the intended use of your backboard, and different standards exist for professional and amateur courts.
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Trainees going through Basic Underwater Demolition/SEAL Training, or BUD/S, will be expected to do many miles of running every week and continue to do so while training as full SEALs. Training for endurance-based distance running is a matter of putting in the miles. SEALs can run 30 miles in a week or more.
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Participating in and performing reasonably well in most running events requires a few key skills. First, you need to develop fundamental strength to complete the event and be competitive. You also need a sense of timing, or pacing, so you expend your energy effectively.
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