Sometimes called sacred lotus, Chinese lotus root (Nelumbo nucifera) is a perennial species of aquatic plant grown for its fragrant, cup-shaped flowers and round foliage. It grows well within U.S. Department of Agriculture plant hardiness zones 4 to 10, where it is commonly added to water gardens and decorative ponds.
What causes puberty to begin? Puberty, that awkward phase when boys and girls are primed for their sexual reproductive years as men and women, appears to be triggered by the brain's own version of It takes two to tango, whereby a signal literally gets turned on by a molecule that is produced by a gene aptly named KiSS-1.
If he has sexual intercourse (sex) with a girl, he can make her pregnant. Puberty is started by hormones, which are chemicals that tell parts of the body to do things. Today, on average, girls start puberty at age 10 or 11, and boys at age 11 or 12. However, people all over the world start puberty at different ages.