A city park and a freshwater lake are examples of ____________________ that are vulnerable to non-native species and pollution.
Fill in the blank(s) with the appropriate word(s).
habitat islands
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Why wouldn't you use carbon-14 dating on a piece of shell that was estimated to be 1 million years old?
A. Sea shells do not have radioisotopes. B. Uranium dating is better for items older than 1/2 million years. C. Carbon dating is only useful on plants. D. The amount of radioactive carbon in the sample would probably too small to measure. E. Carbon dating can only be used on items that were once alive.
A rapid downslope mass movement of snow and ice is called a(n) ____________________. Fill in the blank(s) with the appropriate word(s)
According to this graph, which shows water balance for the Ogallala aquifer, which of the following statements are true?
A. Less water is taken out of the aquifer than is gained from recharge. B. More water is taken out of the aquifer than is gained from recharge. C. Springs and rivers take out more water than does pumping. D. As the aquifer dewaters, it expands, increasing the amount of pore space in which to store water.
Which of the following processes is most closely associated with "rusting"?
A) Hydrolysis B) Hydration C) Carbonation D) Oxidation E) Nivation