What is the relationship between the advances in biology and the improvement of the quality of life?

Answer 1

The more we know about something, the more we can improve about it.

Let's relate this to physics. When we didn't knew about the power of electricity we weren't able to use it to improve our lifes. There were only thunders on the sky.

But then, we, somehow, learned to tame electricity, understanding its nature. And we know have photocells, computers, etc.

In Biology, our concern is life. The more we know about life, the more we can use that information to improve our lifes. When we didn't know microorganisms existed, we weren't able to know if somebody was indeed infected by "something". But them Leewenhowk invented the microscope and we were now able to see microorganism.

Pascal noticed that common mold (Penicillium sp.) always has a sterile halo that surrounds it when it grows on bread (and everywhere). We supposed that this mold was the cause of this strange sterile halo. Therefore, he discovered penicillin, a molecule that prevents bacteria and some fungi to rebuild their cell walls and provocating them to die.

Remember, the know you more about something, the more profit you can make about that knowledge.