Animals need control mechanisms to do things without thinking. They digests food, breath and walk without thinking about things completely.
There are no clinical situations I can imagine that would require the hormonal IUD and birth control pills. Taken together, they are providing more progestin than is required to prevent pregnancy or reduce menstrual bleeding. Contact your health care provider for advice specific to your situation.
They do not require energy, which is often in the form of ATP.
I think you need to educate yourself about the methods of birth control. "Allergy" to all hormonal methods is unheard of, but if it is so, herbal options are not likely to be easier. Remaining methods are natural family planning, abstinence, and barrier methods such as condoms, vaginal sheath, diaphragm, cervical cap, and contraceptive sponge. These methods are less effective than other options, and require you to follow directions exactly.
No. The nodes are automatic. They start the pulses by themselves. This is called an automatic pacemaker. They have no external nerve or hormonal control.
Yes. All animals require oxygen.
Analog computing mechanisms can reach a solution much faster than digital computing mechanisms can for the same problem; but to get more digits of accuracy, analog computing mechanisms require expensive high-precision, low-drift, temperature-stable components, while digital computing mechanisms can be expanded inexpensively to as many digits as desired.
No. That would require hormonal treatments and/or surgery.
All living things require water. Humans require it and so do animals.
Animals require higher rate of respiration as they move from one place to another and therefore they need more energy. There the rate of respiration in animals is than in plants. They require more enrgy.
All animals need oxygen to live.
Honesty require first quality control.
No