Whenever a new drug, device, or food, is developed for use in animals, It has to be approved by the FDA before it can be sold and marketed to the public.
Don't use the exact words, I copied it from an FDA website so change the wording first before you submit. Good luck Lol.
Answer:
The answer is hormones.
Explanation:
Two of the main systems that control almost every action in our body are our nervous system and endocrine system which have to have inner communications and communication with our brain.
As stated in the question, nervous system uses neurotransmitters for communication which are chemicals released by neurons to generate electrical signals that make the communication possible.
The main mean of communication that our endocrine system uses is substances that are called "Hormones" which are produced by certain glands and organs in our body and are usually released into our bloodstream to effect the functions of other organs and our body. Hormones can be used for both communication of the endocrine system itself and for the communication of other organs and our brain.
I hope this answer helps.
let me do my research real fast and I will let you know what I find
The answer would be the cell wall or the cell membrane
Answer:
There is no enough data on Earth's temperature before life appeared.
Explanation: