To check your answer at least twice
Answer:
Liver and Pancreas
Explanation:
Liver and Pancreas play an important role in maintaining blood sugar homeostasis
The pancreas has cells called Islets of Langerhans which release insulin and glucagon which are responsible for maintaining blood sugar levels.
Liver too plays an important role in the regulation of blood sugar levels by releasing glucose in response to glucagon.
Vitamin B12-- without it, it could be destroyed by the digestion process
Gravity Probe B showed this to be correct, in 1905 Einstein determined that all laws of physics are the same for all non accelerating observers <span />
D because it makes more sense