Scientists from 120 countries signed onto a document issued by the UN Intergovernmental Panel on Climate Change. The conclusion of this Panel was:
a) average sea level will rise up to two feet by the twenty-second century.
b) average sea level will rise up to two inches by the twenty-second century.
c) average sea level will remain steady in the twenty-second century.
d) there is insufficient evidence to support a hypothesis on global climate change.
a) average sea level will rise up to two feet by the twenty-second century.
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In 1950, Africa's population comprised about ________% of the world's total. Today it comprises about ________%
A) 21; 9 B) 10; 20 C) 25; 3 D) 8; 16
Which is true of humid subtropical winter-dry climates?
A) The wettest summers month receive approximately 2 to 3 times more precipitation than the driest winter month. B) Few natural hazards occur throughout the humid subtropical winter-dry climates. C) The winter dry season is related to the seasonal pulse of the monsoons. D) The "driest" winter months still have at least 7.5 cm (3 inches) of precipitation.
A depositional feature that has been deposited on the inside of a curve because of lower velocity is known as a
A. meander cutoff. B. midchannel bar. C. point bar.
The element bromine, Br (atomic number 35), has two major isotopes of similar abundance, both around 50%. The atomic mass of bromine is reported in the periodic table as 79.904 atomic mass units. Choose the most likely set of mass numbers for these two bromine isotopes.
A. Br-79, Br-81 B. Br-79, Br-80 C. Br-80, Br-81 D. Br-78, Br-80