a) We can't imagine a world without nature, so that means that in our life there should be some mountains,glacier, river, brook, lake grass, bushes, birds, various animal species etc.

b) Personally, I think we are not 100% free to choose what ever we want to become. There are a lot of influences for example our parents. We make them extremely proud, if we manage to become a famous actor, a doctor, a lawyer or something like that. On the other side, they give us hint to do that way instead of the other. If you have got some as an idol, you tend to do what he did. Although we have all these influences, we are the one who decide, no matter if this is not the way our parents or teacher or somebody liked

c) It really depends on the persons you are related to. If they are good, that means if they know for example that if we keep damaging our environment by driving often by car (C02 emissions), if they are not interested in saving the jungle and all that kind of stuff, then the danger exists, to act like them.