A spruce tree trunk has been found preserved in glacial till. Samples taken from the trunk have been found to contain approximately 12.5% of Carbon-14. How many half-lives have elapsed since this tree was buried?

Explain how/why Yugoslavia broke up into many countries

Which of the following is not an independent country? A. Jamaica B. Haiti C. Aruba D. Puerto Rico E. Dominican Republic

Which activity is a primary economic activity? a) subsistence farming b) food processing c) truck driving d) industrial manufacturing

Which of the following is NOT part of the ICF model? A. environmental factors B. participation C. activities D. persistence

Which of the following is an example of an epeirogenic process? A. A large plateau forms in the interior of a continental plate when a large section of the plate rises evenly due to an even expansion of the underlying mantle. B.

The number of elected officials who are African Americans a) has risen dramatically at all levels of government b) has grown at local and state levels, but not federal c) has been shrinking since 1990 d) Grew after 1964 until about 1990 and then

The Richter scale a) works well for very large earthquakes. b) measures the size of an earthquake in terms of the damage it does (its intensity). c) is today termed a local magnitude (ML) reading.

What problem does russia have with building shipyards in the north

Which of the following important physical features is not located on Antarctica? A. Lake Vostok B. Mt. Cook C. Mt. Erebus D. Vinson Massif

What does these coordinates go to? 40.720059,-89,273147