Dharma Questions: Miscellany — Part 2

This irregular “Dharma Questions” series deals with “dharma” meaning both the truth of the nature of reality and some Buddhist teachings. Amongst other things these questions can be:
• thought experiments
• borderline musings not meant to be answered
• from laziness of not contemplating or researching them yet

There’s more or less 17 questions. Here’s two:

Why do the Ānāpānasati instructions omit details on how to bring mindfulness to the fore and calm bodily formations?

What is the root condition (and causes) for (each of the) unwholesome roots of greed, ill-will and delusion (lobha, dosa, moha)?