Changing the composition of least some components of the rock.
I would think the seeds being that it’s in the middle of the core of the Apple.
No by wind speed is the way to determine the strength.
The best answer to this question is:
C. A forest fire that was caused by lightning.
A forest fire could kill for example all the individuals of a certain species in a given area - this would be independent of the population density of the species. All the other factors would affect the population the more, the more dense it is.
,