Here's how it works:
1. Variation: Individuals within a species naturally have variations in their traits, whether it be size, color, behavior, or other characteristics.
2. Inheritance: These traits are passed down from parents to offspring.
3. Differential Survival and Reproduction: Some variations make individuals better suited to their environment. These individuals are more likely to survive, reproduce, and pass on their advantageous traits to their offspring.
4. Adaptation: Over generations, the accumulation of these advantageous traits leads to the species becoming better adapted to its environment.
In other words, natural selection favors individuals with traits that help them survive and reproduce in their specific environment. This leads to a gradual change in the species over time, allowing them to respond to various conditions.
It's important to note that Darwin didn't understand the mechanism of inheritance (genetics was still unknown). Gregor Mendel's work later provided the foundation for understanding how traits are passed down.
