Answer:
negative feedback loop involving insulin and glucagon help to keep blood glucose levels within a narrow concentration range. If glucose levels get too high, the body releases insulin into the bloodstream.
hope it help
: Option 2 and 3
2: fossil fuels
3: All of the above
4: coal. oil. natural gas
5: use only renewable resources
6: solar
the man above me had the same answer i just did it as well because it's the right answer i looked it up i hope he or i help you guys <3