Here's a breakdown:

* Organisms with characteristics suited to the environment: This means they have traits that give them an advantage in surviving and reproducing in their specific habitat.

* Will survive and reproduce: These advantageous traits allow them to live longer, find food more easily, avoid predators, etc. This means they are more likely to pass their genes on to the next generation.

Key points about natural selection:

* It's a gradual process: It happens over many generations.

* It's not about being "better" or "worse": It's about being best suited to the environment at that moment.

* It leads to evolution: Over time, natural selection can drive changes in populations, leading to new species.

Let me know if you have any more questions about natural selection or evolution!