A sample of radium is usually a little warmer than its surroundings because

A) it efficiently absorbs and releases energy from sunlight.
B) its atoms are continually being struck by alpha and beta particles.
C) it is radioactive.
D) it emits alpha and beta particles.


B

Environmental & Atmospheric Sciences

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The dominance of Christianity was assured during the fourth century Roman Empire largely due to

A) stimulus diffusion. B) hierarchical diffusion. C) contagious diffusion. D) expansion diffusion. E) possibilism.

Environmental & Atmospheric Sciences

Mercantile colonialism required huge migrations of people to extract the Earth's resources, including 30 million slaves and contracted workers from Africa, India, and China to work mines and plantations around the globe

a. True b. False Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

How do volcanoes and earthquakes modify the shape of coastlines? Give an example of each

Environmental & Atmospheric Sciences

Carnotite ____

A)undergoing pressure becomes bituminous coal B)is the source of most of the uranium used in nuclear reactors in North America C)is never found in granitic rocks D)rarely occurs in the presence of plant remains E)is another name for shale

Environmental & Atmospheric Sciences