Which statement about John Joly's salty ocean theory to calculate Earth's age is false?
A) John Joly's theory gives a more accurate estimate of Earth's age now that more accurate observational data is available.
B) Joly believed that the ocean began as a salty body of water and that salt entered it from rock sources at a steady rate.
C) Joly's method was less accurate than Kelvin's.
D) Joly underestimated the amount of precipitated rock salt in the world.
Answer: C
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At high altitudes atmospheric pressure is lower than at sea level. Which of the following is true?
A) Boiling water is cooler in Denver than in New York. B) Boiling water is hotter in Denver than in New York. C) Water boils at the same temperature in Denver and New York. D) We cannot predict the relationship between the boiling points in the two cities.
Earth is closest to the Sun in early July
Indicate whether the statement is true or false
The three crops that humans rely on for the majority of nutrients and calories are
A. Oats, beans, and barley B. Potatoes, wheat, and oats C. Barley, oats, and rye D. Maize, oats, and rice E. Wheat, rice, and maize
What was the population of the Earth (as of the book's publication)?
A) over 7 million B) nearly 2 billion C) over 7.4 billion D) 670 million E) nearly 2 trillion