Evolution of human intelligence

Humans have become very intelligent over time. This is called evolution. It means that the things that help us survive have changed and our brains have grown bigger. Over time, humans have been able to learn more and more skills like how to make tools, to grow food, and how to communicate with each other. This means that we have been able to build bigger and better things, and to come up with better ways of doing things. The more intelligent a species (like humans), the more likely it will be able to survive and be successful.