It's important to understand that natural selection is a process, not a list of distinct parts. However, we can break down the process into four key components:

1. Variation: Individuals within a population exhibit variation in their traits. This variation is inherited, meaning it can be passed down from parents to offspring.

2. Inheritance: Offspring inherit traits from their parents. This means that advantageous traits are more likely to be passed on to the next generation.

3. Selection: In a given environment, some traits provide an advantage, making individuals with those traits more likely to survive and reproduce. This is the "selection" aspect of natural selection.

4. Time: Over multiple generations, individuals with advantageous traits become more common in the population, leading to a gradual change in the overall population. This is the process of evolution driven by natural selection.

These four components work together to drive the process of natural selection. It's not a simple "four steps" process, but rather a complex interaction of factors that ultimately leads to adaptation and evolutionary change.