Answer:
The axonal membrane (place as brainliest so others know its correct)
ANIMAL. It's because animals are living organisms. Also 6 letters! A-N-I-M-A-L!
Hormones
The endocrine system includes various glands in the body that are responsible for secreting hormones into the bloodstream. Hormones are chemical substances produced by the body that regulate certain functions of cells and organs. Hormones can regulate sleep, sex, growth, stress, huger, metabolism, etc.
Groundwater is recharged naturally by rain and snow melt , hope this helps :)
Frontal lobe because its where decisions are made and behaviors are choices (in most cases).