The Moon's low average density tells us that the interior contains relatively little ________.
A. helium
B. iron
C. oxygen
D. aluminum
E. hydrogen
Answer: B
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In the low latitudes the average temperature is between ________ °C
A) 26 and 28 B) 35 and 37 C) 50 and 54 D) 65 and 72
Weather data necessary for forecasting includes barometric pressure, surface air temperature, dew-point temperature, wind speed and direction, and precipitation patterns
Indicate whether the statement is true or false
What was NOT associated with the Industrial Revolution?
A) Food became more expensive and malnutrition increased. B) Productivity levels surged. C) Clothing became relatively cheap, even for the working class. D) Life expectancies rose. E) The rise of a new class of people, the industrial working class, occurred.
Which technology provides the cheapest source of electricity generation?
A) biomass B) geothermal power C) solar energy D) wind power E) all of the above are incredibly expensive, and not valid alternatives to fossil fuels