2. enzyme
3. esophagus
4. lower esophageal sphincter (LES)
5. throat (pharynx)
6. stomach
7. stomach
8. protein
9. HCL
10. small intestine
11. chemical
12. nutrient
13. cells
15. bacteria
16. anus
17. solid
Solar radiation, because it hasn't (at least noticeably) affected hawks.
Igneous rock, same goes for when sedimentary rock as well.
Answer:
Low,high
Explanation:
Thyroxine is a complex organic compound containing iodine. Thyroxine concentration in the body is kept to the required levels through a negative feedback mechanism. The production of thyroid stimulating hormone is regulated by thyroxine. An increase in thyroxine inhibits the pituitary gland which responds by secreting less thyrotropic hormone. This in turn reduces the activity of thyroid gland leading to a drop in thyroxine production. A low thyroxine level removes the inhibitory influence on the pituitary so that more thyroid stimulating hormone is produced.
