About 200 million years ago, the supercontinent began to break up. Gondwana (what is now Africa, South America, Antarctica, India and Australia) first split from Laurasia (Eurasia and North America). Then about 150 million years ago, Gondwana broke up.
The installation costs of above ground pools usually run $1000-$3000, depending on the size and type of pool. Keep in mind that oval pools normally cost more to install than round pools, and the kits are also more expensive. $800 run a power line for the motor - $400 for above ground pool fence and alarm (town requirement) - $300 for landscaping after installed the pool (seeding and stone around the pool, etc) - then ofcourse monthly cost to maintain the pool and opening and closing cost. hope this helps.
Pools can range from soft side at $467 to nice hard side round models at $2,500. Instead of building the above pools from scratch, many of these models come in easy construction kits. You can order have the pools up and running in a weekend! The cost of an above ground pool will vary based on size and shape. Larger, as well as oval-shaped pools will be most expensive. Filling this type of pool uses only 18,015 gallons of water, on average, and chemicals average $80 a month. With above ground pools open an average of close to five months of the year, annual chemical costs will total near $400.