An adolescent writing from the perspective of the world, or earth.
She is telling people that there are myriad of things on earth, seen and unseen, wonderful and fearful. Seen are things you see everday, unseen are things we have yet to discover, such as the hidden creatures of the amazon or deep ocean creatures. Wonderful like the sunshine and the refreshing rain on our faces, fearful like droughts, storms and earthquakes.
The writer goes on to say that for most of us, everything that we do, will be alright but there are certain few who if they do not change, will destroy what we have - earth.
The writer is probably refering to actions we do that affects climate and environmental changes, and destruction caused by war and etc. She is asking, are we the ones who will eventually ends life on earth.