How many body in the world?

What gland in the endocrine system signals other glands to produce hormones? How can siblings have the same genes? Basic unit of volume in the metric sysytemequal to 1.057 quarts? Is the field of view brighter or dimmer under high power? How many baseboard heaters can you put on a 2 pole 15 amp breaker? How much does one gram of blood weight? Since matter can not be destroyed but converted to energy new energy destroys hydogen what then is the renewable source of hydrogen? How often should you water a pepper plant? How do you call the edge of seawater? Is the oceanic crust heavy or light? What is the major type of stress that occurs at convergent plate boundries? Why do the electrons stay circling around the nucleus if they are not connected? What is the most miracle organ system? What is the doubling time of china in 2011? What was at the site before the fukushima daiichi? Do benzene dissolve in oil? Do metal atoms decrease in size when they combines with nonmetal atom? What happens to poloris as the star wheel is rotated? Is methyl propionate an ester? Do hurricanes in the northern hemisphere rotate clock wise or counter clock?