Well, Louis Pasteur was a scientist who discovered a process called "pasteurization." What this process is is heating food or whatever liquids to kill the bacteria which might be in it. This process became widely used for milk, as well as for vaccines. It improved food safety for the public and provided for a way that people can get vaccinated so that their immune systems are resistant to disease. So from my knowledge, I would say "<span>better standards for public health" is your answer.
</span>
<span>African americans assisted the construction of the subway system from the inception.</span>
Answer:
Michio Kaku established the nineteenth and twentieth centuries as an "Age of Discovery" in "Choreographers of Matter, Life, and Intelligence
d) by listing the significant scientific developments of the era.
Explanation:
According to Michio Kaku during the XIX and XX century the humans have discovered the most uses for advance technology and these discoveries act as the base for future developments of the civilization.
He believes that in the year 2100 the humans will be able to move objects with the mind and the computers would read minds.