Radon
A. can become trapped in homes.
B. is responsible for most cases of lung cancer.
C. is a major problem throughout the world.
D. is expensive to remove from buildings.
Answer: A
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Muhammad Yunus and his Grameen Bank received the Nobel Peace Prize for pioneering the use of ____________________ to assist millions of people in lifting themselves out of poverty
Fill in the blanks with correct word
An air mass is a large region of air, typically hundreds or thousands of square kilometers, with relatively uniform characteristics of temperature and humidity
Indicate whether the statement is true or false.
By 1600, runaway slaves created settlements, called quilombos, in Brazil's hinterlands
Indicate whether the statement is true or false
During the earliest history of the earth, ________
A) the earth was cold and lacked any source of heat. B) the earth did not have any radioactive material C) the temperature increased so that iron and nickel melted D) almost all of the material was radioactive, and it decayed to the compositions we have today.