110 Coolster , gas & spark but no start. My GF's boy has a 2 yr old Coolster 110cc (Kazuma I believe but not 100%) Well it ran fine the other day...he rode it for an hour with a few breaks here and there.
Gas exchange is a biological process through which different gases are transferred in opposite directions across a specialized respiratory surface. Gases are constantly required by, and produced as a by-product of, cellular and metabolic reactions, so an efficient system for their exchange is extremely important. It is linked with respiration in animals, and both respiration and photosynthesis in plants.
Next. Gas exchange surfaces allow living things to obtain the oxygen they need for respiration. Large organisms need organs for gas exchange, such as gills in fish and lungs in mammals. The parts of the human respiratory system work together to get air into and out of the body.The respiratory system protects itself from disease but there are still diseases of the lungs, including asthma.as exchange surfaces. Most living things need oxygen to release energy from food by respiration. They also need to release waste carbon dioxide (from respiration) into the surroundings. This means that they need a surface which can exchange these gases with the surroundings.