Light Scuba
Why would inhaling pure oxygen cause someone to suffer from light headedness?
For example, when Scuba Divers dive, they use tanks that contain a gas mixture much like air. If they used tanks that contained pure oxygen, they could suffer light headedness. Explain why inhaling pure oxygen gas might cause light headedness (2 marks).
Actually...divers use an atmospheric mix for a simple reason...and it has nothing to do with lightheadedness...
Oxygen is LETHAL at high concentrations at different partial pressures. If a diver were to dive to much over 120 feet on a standard atmospheric mix, they would be risking Oxygen Toxicity. Deep dives have to use a special mix that includes helium to prevent the O2 we need from killing us.
Besides, if we breathed 100% oxygen on a dive, we'd loose the reflex to exhale. Carbon Dioxide in the air helps trigger the body's breathing reflex. In a 100% oxygen atmosphere, a human would have to conciously force him/herself to exhale and inhale until the CO2 levels in the blood started reaching near lethal levels.
By the way...if you're trying to sneak-in exam/study questions, it's usually a good idea to remove the scoring value! 
Good Luck!
Monterey Bay is a highlight of the central California coast, located south of San Francisco and between the cities of Santa Cruz and Monterey. Monterey Bay luxury real estate comes with several desirable features. Beautiful beachfront homes and homes at higher elevations with magnificent views of Monterey Bay are just some of the perks that Monterey, California real estate makes available.
The Beaches of Monterey Bay
Many people choose Monterey Peninsula homes and land due to the sheer number of remarkable beaches in the area. Monterey State Beach, which is the largest beach in Monterey, is a safe beach where you can enjoy activities such as beach volleyball, kayaking, and canoeing. The beach features restrooms, snack bars, restaurants, and an ample parking lot.
San Carlo Beach is a popular jumping-off point for scuba divers. Scuba divers brave the chilly waters of San Carlo Beach to view a fantastic array of sea life, the area is home to 70% of the world's invertebrate species. Families also enjoy visiting San Carlo Beach because of its shallow grade, which makes it ideal for taking a light dip. San Carlo Beach also features a grassy area with picnic tables and an outdoor shower.
Asilomar State Park and Beach is ideal for tide pooling, viewing wildlife, and watching the beautiful sunsets. The beach features small coves that are linked by pathways and boardwalks. Some popular activities at this stunning beach include swimming, surfing, and kite flying.
Marina State Beach is not a great swimming destination, instead it is a popular spot for kite flying, surf-casting, and hang-gliding. The beach features 170 acres of sandy beaches and sand dunes. There is also a lovely café and observation deck at Marina State Beach where you can take a leisurely stroll.
Shopping in Monterey Bay
Another perk of purchasing luxury real estate near Monterey Bay is the proximity to an abundance of excellent designer boutiques and specialty shops. You'll be mere minutes away from some of the best shopping locales in the area.
The Cannery Row Antique Mall is the largest antique mall on the central California coast with over 140 antiques and collectibles dealers at this mall in Monterey Bay.
If you're looking for non-franchise, high-end shops and boutiques, visit the Crossroads Shopping Center. The Crossroads Shopping Center features 70 individually-owned boutiques, where you can find a variety of unique, locally-produced products ranging from jewelry to home accents.
To shop at luxurious designer boutiques, visit Carmel Plaza, where you'll find shops such as Louis Vuitton, Tommy Bahama's, and Tiffany & Co. Shops at the Lodge in Pebble Beach also feature elegant items for your shopping enjoyment. Art enthusiasts will want to visit Ocean Avenue, where you'll find galleries like Classic Art Galleries, Rip Squeak Gallery, and Philips Gallery.
There are several reasons why an increasing number of people choose Monterey, California real estate. The region is absolutely stunning, but what really makes it stand out is its accessibility. Whether you want to spend the weekend relaxing by the beach or getting some shopping done, you'll find plenty of ways to enjoy yourself in Monterey.
DISCLAIMER
Obtain the property report or its equivalent and review it before signing anything. Tehama Golf Club membership is by invitation only and not included in the purchase of Tehama property. A Tehama Social Fitness Membership is offered to all lot purchasers in Tehama, subject to dues, fees and applicable rules and regulations. The Tehama Golf Course, Clubhouse, and Fitness Center are privately owned facilities, which are subject to use by others who may not be lot owners. Purchasers of Tehama property will not acquire a proprietary interest in the Tehama Golf Course, Clubhouse, or Fitness Center, which facilities are subject to membership dues, fees, rules and regulations. Use of the Tehama Golf Course, ,Clubhouse, and Social Fitness Center is at the pleasure of the owner of the facilities.
SCUBA AND X DOUBLE TEAM LIGHT SHOW
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