Cells are the basic unit of structure and function in organisms.
Needless to say, organisms can’t be a thing if cells didn’t exist.
Answer:
There are more earthquakes on the West coast of the United States, because the boundaries of the North American, Pacific, and Juan de Fuca tectonic plates are located there. As the edges of the plates slide past or are forced under each other, the movement creates earthquakes
It is milk because milk has lactose
I believe the correct answer is natural selection.
Natural competition and the fight for “survival of the fittest” is what pushes diversity the most.