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.
1. Many causes: Anemia (low hemoglobin) can be a result of hypothyroidism through multiple mechanisms. Low thyroid causes less production of blood cells resulting in a normochromic anemia. It can also be associated with B12 deficiency and cause a macrocytic anemia. It can also cause less iron absorption and result in a microcytic anemia. If anemia persists after treating low thyroid, look other causes.