Microbes are Still a Mystery to Scientists and the Diversity of Life

The study of genes is moving toward a new frontier. There is a new field studying microorganisms which exist in living organisms. Microbes control every process on earth, and a human is made up of 90% bacteria. However, we know very little about these microbes. There is now a newer, more efficient way, to study this bacteria. From this scientists can discover new species and genes. Listen to learn how the study of microorganisms became so important.

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Story Length: 6:15

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Listening Comprehension Questions

In what ways did Andrew Carnegie’s libraries serve their communities?
How did Carnegie benefit from a library when he was growing up?
Which personality traits helped propel Carnegie from poverty to riches? Bring specific details from the story to support your ideas.
According to Carnegie, what should rich people do with their money and why? Why was Carnegie known as both generous and “brutal”?

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In your opinion, what should really rich people do with their fortunes?
What does it take for a person to rise from “rags to riches”?

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