1. Carbon Dioxide 2. respiration 3. animals 4. plants 5. Oxygen 6. combustion
B - the lion eats the grass—it cannot be A. because grass gives off o2 not co2
C. Wind, is NOT a biotic factor of a niche. Hope this helps!
Answer:
According to the model, the "villi" of small intestines is being damaged as an impact of celiac disease. Small intestines are responsible for absorption of nutrients and minerals from food, this occurs through villi, in case of damaged villi absorption is interfered, thus disturbing the digestive system. If the nutrients, minerals or vitamins are not being absorbed well by small intestines then they will be excreted out of the body and will not be transported to the blood and other areas, this would result in deficiency of minerals and vitamins in blood that cause weakness.