Entropy.
No matter what natural or man made disasters occur there will always be nature, perhaps not as we know it but it will still be nature.
The eventual running down of the universe is the only thing that will truly destroy nature and even when that happens it is a natural phenomena, so that is nature too.
A rule describing a pattern in nature is called a natural law. These laws are generalizable principles that describe how natural processes and phenomena operate in the physical world.
No type of magnetic mineral found in nature is properly called "platinum" by a chemist, because platinum is a chemical element and is not magnetic! The most common magnetic mineral found in nature is called "magnetite". It contains both iron (II) and iron (III) oxides in nearly constant proportions.
what sits on the water and warns ships of the danger coast
Meteors
Iron is formed in nature through a process called supernova nucleosynthesis, where heavy elements are created during the explosion of massive stars. This process involves the fusion of lighter elements in the star's core, eventually leading to the formation of iron.
An Octopus...
Demosthenes
posed a clear danger to the country.
They are called conditions.
A posed picture can be referred to as non-candid, or a portrait.
As we grow, we usually learn what is safe and what isn't. Sadly, at times we see the danger when it's too late. It is human nature to push the barriers. If we avoided all danger, maybe there would be no cars, aircraft and ships etc, in fact nothing that posed a threat.
Candid
Question as posed makes no sense. Free? In nature? If so, no.
Yes, there are dangers posed by the atmosphere. All forms of weather, including storms, are atmospheric phenomena.
The sirens lured sailors to their deaths, and ships to their doom, representing a danger at sea. Lotus-eaters represented the danger of a sailor leaving home never to return for finding peace away on some far away shore.
Kristi was likely not scared of the soldiers in "Number the Stars" because she was young and did not fully comprehend the danger they posed. Additionally, Kristi's innocent and carefree nature may have shielded her from feeling fear in such a threatening situation.
A non-posed picture is called a candid photo. It captures moments spontaneously without the subjects being aware or posing for the camera.