Reasons for the Population Decline. There is no question but that the populations of most European countries will decline in the next generation, and in the cases of Germany and Russia, the decline will be dramatic. In fact, the entire global population explosion is ending.
Osseous tissue is a type of connective tissue found in bone. It is the primary constituent of bone, creating the mineral matrix that makes bones hard, strong, and lightweight. Along with osseous tissue, the bones also include marrow, blood vessels, nerves, and epithelium, which covers the surface of the bone.
Compact bones are also known as cortical bones. Spongy bones are also known as cancellous bones. Compact and spongy bones are the two main types of osseous tissues. Compact bones are made up of osteons. Osteons are also called Haversian systems. These osteons make the structure of compact bones.pongy bones are also known as cancellous bones. Compact and spongy bones are the two main types of osseous tissues. Compact bones are made up of osteons. Osteons are also called Haversian systems. These osteons make the structure of compact bones.