Differences in the sequence of nucleotide bases in DNA
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Estuaries are partially enclosed water bodies.
Water bodies called estuaries and the marshes that surround them are typically found where rivers and the sea converge.
Unique plant and animal communities that have adapted to brackish water, which is a mixture of fresh water that drains from the land and salty ocean, can be found in estuaries.
Many of the environmental services and features that brackish estuaries provide, such as acting as natural runoff filters and functioning as nursery grounds, are also provided by these freshwater estuaries.
They have clean water and provide a safe growing and protected environment and hence are great spawning grounds for a wide variety of fish and shellfish.
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Vitamin D, helps build bones and keep bones strong and healthy.
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While exercising, the muscles need additional energy as the breathing rate and volume of each breath increase to bring more oxygen into the body and remove the carbon dioxide produced. If insufficient oxygen is available to the muscles, for instance, the exercise is vigorous and/or prolonged, the heart and lungs are unable to supply sufficient oxygen. Muscles begin to respire anaerobically. Lactic acid is produced from glucose, instead of carbon dioxide and water. Muscles continue to contract, but less efficiently. When a period of exercise is over, lactic acid must be removed, because the body's tolerance to lactic acid is limited. These processes require oxygen. This is why, when the period of activity is over, a person’s breathing rate and heart rate do not return to normal straight away.
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