Economics means how people make, buy, and sell things, like food and toys. Human biology means how our bodies work and what we need to live.
Both things are connected because we need money to buy things like food and medicine that keep our bodies healthy.
If people don't have enough money to buy these things, they might get sick or not grow as well. This is why some people and countries are poorer and less healthy than others.
Economists and scientists study how we can make sure everyone has enough money and resources to live healthy lives. They also study how different kinds of jobs and working conditions affect our health and wellbeing.
Overall, economics and human biology are like two puzzle pieces that fit together to help us understand how the world works and how we can make it better for everyone.