Targetting supports

Maveric78f

Premilinary question:
Is there any way to target the supports when using spells like Demolish or effects like the one of Conclave Naturalists?

I guess there is not. I tried about everything. But I also noticed that it is not random: when you start over the same story mission with 2 or more supports in play at the beginning of the game, you happen to always destroy the same support. So my secundary questions are:
- Why is it possible to target creatures but not supports? (I know it's written 'target' in the creature spells)
- Is there any rule to know which support will be destroyed by our card?