Evolution and variety are the outcome of long-term interactions between organisms and their surroundings, as well as the repercussions of those interactions. Species adapt to their habitats through time, and the range of environments available encourages a diversity of organisms that have adapted to them.
It determines ones success in society, obviously it’s not a necessarily fact or universal statement, but society views some jobs as higher, causing them to be looked at as higher
Gravity is a natural phenomenon
or
Mirages are a common desert phenomenon
Each time a new social media app is revealed to the world it becomes a phenomenon for a while and then slowly fades into unimportance
I think it's 76,000. maybe
The speaker will never see his beloved Lenore again.