According to the World Wildlife Fund, if deforestation, or the clearing of trees, continues as it has been, 55 percent of the Amazon rain forest could be gone by 2030.Following are examples of Amazon rain forest animals that have already been affected by deforestation.(Mario Tama/Getty Images News/Getty Images).ccording to the World Wildlife Fund, if deforestation, or the clearing of trees, continues as it has been, 55 percent of the Amazon rain forest could be gone by 2030.
Iron deficiency may cause hair loss. Chronic or excessive bleeding. Long-term (chronic) bleeding is the most common cause of iron loss that leads to iron deficiency. Other conditions or events that result in large amounts of blood loss may also lower iron levels to the point where anemia develops.
The most common cause of iron deficiency is bleeding or blood loss, usually from the gastrointestinal tract. Other causes include a lack of iron in your diet, or changes in your body due to pregnancy. Common causes of bleeding in the gastrointestinal tract include: Cancer- of the gastrointestinal tract (such as colon or rectum cancer) Hemorrhoids - these are swollen veins in the lower rectum.