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This quiz consists of 5 multiple choice and 5 short answer questions through Part 5, Chapter 25.

Multiple Choice Questions

1. According to the author, humans today have 625 percent more what in their bloodstream compared to previous generations?
(a) Chlorofluorocarbons.
(b) Lead.
(c) Alcohol.
(d) Pesticides.

2. Charles Darwin suggested that evolution was a process taking millions of years, which many met with skepticism because scientists:
(a) Believed only birds evolved, not mammals or reptiles.
(b) Did not like Darwin.
(c) Believed Earth to be much younger.
(d) Thought life on Earth had existed no more than 3,000 years.

3. Through the examples provided about Thomas Midgley's inventions, what is the author trying to say about science?
(a) Pursuing scientific avenues is always justified, regardless of outcome.
(b) Science can better our lives but used unwisely it can be dangerous to the planet.
(c) Science is the cause of all our modern ills.
(d) Without science, we would still be living in caveman days in primitive dwellings.

4. What must amino acids do to become protein?
(a) Shrink.
(b) Link.
(c) Evolve.
(d) Split.

5. What is an extremophile?
(a) An extremely large living organism.
(b) A scientist who studies climate extremes.
(c) An organism adapted to living in extreme conditions.
(d) A researcher who explores extremely isolated regions.

Short Answer Questions

1. In addition to being a seventeenth-century astronomer, Christopher Wren designed:

2. What organisms does the author say are the most enduring inhabitants of our planet?

3. Earth is composed of 8 to 12 larger plates and about how many smaller ones?

4. Arranged side by side, how many atoms can fit across the width of a typical human hair?

5. James Hutton was a geologist who wondered why:

(see the answer key)

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