The correct answer is option B, that is, fewer births.
Aging of Europe also called greying of Europe, refers to a demographic process in Europe featured by a reduction in fertility, higher life expectancy, and a decrease in mortality rate among the European populations. Higher life expectancy and low birth rates donate to the modification of Europe's population pyramid shape.
The most substantial modification is the transformation towards a much older population composition, leading to a reduction in the ratio of the working age, while the number of the retired population enhances.
It appears that your offspring have a 50% chance of having BB and 50% chance of having Bb. bb isn't a possibility.
Periosteum is the thin yet tough outermost layer of bones. Its many collagen fibers support the bone and firmly connect it to the surrounding structures. Osteogenic cells in the periosteum play a vital role in the growth and repair of bony tissue.
Lipids<span> are all similar in that they are (at least in part) hydrophobic. There are three important families of </span>lipids<span>: fats, phospholipids and steroids. Fats are large molecules made of two types of molecules, glycerol and some type of fatty acid.</span>