1 Coelomate animals or Coelomata (also known as eucoelomates â true coelom) have a fluid filled body cavity called a coelom /ËsiËlÉm/ with a complete lining called peritoneum derived from mesoderm (one of the three primary tissue layers).he coelom allows muscles to grow independently of the body wall â this feature can be seen in the digestive tract of tardigrades (also known as water bears) which is suspended within the body in the mesentery derived from a mesoderm-lined coelom.
At a 3 percent growth rate, its doubling time â or the number of years to double in size â is 23 years. (The doubling time for a population can be roughly determined by dividing the current growth rate into the number 69. Therefore, 69/3=23 years. Of course, if a population's growth rate does not remain at this rate, the projected doubling time would need to be recalculated.)
1 The rate of growth is [($51,400 - $50,000)/$50,000] x 100 = 2.8%. 2  The rule of 70 tells us that real GDP will double in approximately 70/2.8 = 25 years. 3  Real GDP per capita in year 1 is $50,000/200 = $250, while in year 2 it is $51,400/202 = $254.46. The rule of 70 tells us that real GDP will double in approximately 70/2.8 = 25 years. 2  Real GDP per capita in year 1 is $50,000/200 = $250, while in year 2 it is $51,400/202 = $254.46.