The debris from the Big Bang was made almost entirely of ________
A) oxygen and silicon
B) hydrogen and helium
C) iron and nickel
D) carbon and nitrogen
Answer: B
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The Kyoto Protocol was ratified by 130 countries in 2004 and became international law in 2005. What is the goal of the Kyoto protocol?
A) reduction of emissions of nitrous oxide to control acid rain B) reduction of emissions from scrubbers used in industrial plants C) reduction of air pollutants from nuclear power plants D) reduction of greenhouse gas emissions E) reduction of chlorofluorocarbon emissions
Nimbostratus clouds can form in air that is stable
Indicate whether the statement is true or false
The zone of maximum leaching in a soil is called the:
a. A horizon b. B horizon c. C horizon d. D horizon
Describe an advantage and a disadvantage of mass transit rail lines.
What will be an ideal response?