When they are degraded, it can set off a devastating chain of events both locally and around the world. Loss of species: Seventy percent of the worldâs plants and animals live in forests and are losing their habitats to deforestation, according to National Geographic.Loss of habitat can lead to species extinction.hen they are degraded, it can set off a devastating chain of events both locally and around the world. Loss of species: Seventy percent of the worldâs plants and animals live in forests and are losing their habitats to deforestation, according to National Geographic.
Causes of iron deficiency anemia include: 1  Blood loss. Blood contains iron within red blood cells. 2  A lack of iron in your diet. Your body regularly gets iron from the foods you eat. 3  An inability to absorb iron. Iron from food is absorbed into your bloodstream in your small intestine.  Pregnancy.
Iron-deficiency anemia and other forms of anemia are usually more common in women than men. However, these are a cause of chronic low energy and fatigue. Low iron levels in men can result from a vegetarian diet or frequent blood donation. Other forms of anemia may trigger vitamin deficiencies such as low levels of B12.