The Moral Compass: Value and Causality

What facts of reality give rise to the concept of morality?

This is a meta-ethical question. Let's examine one component of the answer by looking more closely at the metaphysical ideas undergirding ethics. They include causality, nature, reason, human nature, society, choice, necessity, action, reaction, consequence, imperative, duty, obligation. Brief special mentions include determinism, compatibilism, amorality, immorality, (moral) nihilism.

The bonus question to ask, if we finish early, is, can the various ethical systems be classified meta-ethically on the basis of natural conditions?