👨‍🎓 Charles Darwin shook the world with his theory of natural selection. What does it mean? Organisms with certain traits have a better chance of surviving and reproducing.

🎉 Real-World Example: Think of it like a reality show where the contestants are plants, animals, and even microorganisms. The winners get to have babies, and their babies are likely to inherit winning traits!

📏 Definition: Fitness is about how well-suited you are for your environment. If you're a cactus, being able to store water makes you "fit" for a desert life.

🎉 Real-World Example: It's like having the right "gear" for camping. A water-resistant tent would make you more "fit" to survive a rainstorm than a paper bag would!

🛠️ Types of Adaptations

• Abiotic: Against non-living things like temperature.
• Biotic: For living things, like developing a beak that can crack tough nuts.

🎉 Real-World Example: Polar bears have thick fur and a layer of blubber for the Arctic's harsh conditions. It's like wearing a heavy-duty parka and snow boots in a snowstorm!

🧬 Why it Matters: In a population, everyone is slightly different. Some are better adapted, thus "fitter," and will likely survive and have more kids.

🎉 Real-World Example: Think of a soccer team. Not everyone is good at scoring goals, but that defender who blocks every shot is also super valuable. Both are "fit" but in different ways.