An astronaut walking in space at an altitude of 300 km and properly shielded from the sun would feel cold when the temperature is 500°C as a result of ____
A) high air density
B) low air density
C) high air pressure
D) temperature inversion
B
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Shifting cultivation can support low levels of population without causing environmental damage
Indicate whether the statement is true or false.
What prevented explorers like Christopher Columbus from finding precise longitude?
A) Calculations necessary for determining longitude B) The lack of accurate pendulums C) A durable and precise clock D) Longitude was not the issue, latitude was the problem
Sustainability ________
A) is impossible to accomplish B) is possible given our increased use of fertilizers and technology for agriculture C) is beyond our current technology and attitudes D) ensures an economy that will decline over time E) involves using resources without compromising future availability
How many rotating lists of names are used to name tropical storms and hurricanes?
A) ten B) six C) one D) They write a new one every year.