Hello.
3 reasons are
Lack of EnthusiasmLack of Focus
Lack of Eye Connection
Have a nice day
Endocrine signaling is hormone based signaling that travels through the blood stream. Many of the sensors and integrating sensors of the endocrine system are located in the brain. The brain barrier contributes to endocrine signalling, such that the brain barrier does not factor in with endocrine signalling. The answer is A
Bacteria cells, I believe so.
