It is because all these three elements contain ionic properties and they have only one element in their outermost shell
FSH is secreted by the Pituitary Gland... upon GNRH being secreted by the Hypothalamus.
Organization is important because the structure denotes the function in biology, therefore organization in this case means that it has a high relevance for homeostasis. If something is not organized, it's not in homeostasis, it's as simple as that.
They live every where
They can effect you and other organisms
They are microscopic
I think it 700 million years because I took the same question and that’s what I put.