10 Population Dynamics â¢â¯Metapopulations A metapopulation is a population of populations. Metapopulations Metapopulations âspatially isolated populations that are linked by the dispersal of individuals. Metapopulations are characterized by repeated extinctions and colonizations.
Osteopenia refers to bone density that is lower than normal peak density but not low enough to be classified as osteoporosis.Bone density is a measurement of how dense and strong the bones are. If your bone density is low compared to normal peak density, you are said to have osteopenia.omen are far more likely to develop osteopenia and osteoporosis than men. This is because women have a lower peak bone density and because the loss of bone mass speeds up as hormonal changes take place at the time of menopause. In both men and women, the following things can contribute to osteopenia:
Achondroplasia is a bone growth disorder that causes disproportionate dwarfism. Dwarfism is defined as a condition of short stature as an adult. People with achondroplasia are short in stature with a normal sized torso and short limbs. It is the most common type of disproportionate dwarfism.chondroplasia is a bone growth disorder that causes disproportionate dwarfism. Dwarfism is defined as a condition of short stature as an adult. People with achondroplasia are short in stature with a normal sized torso and short limbs. It is the most common type of disproportionate dwarfism.