Compared to 50 years ago, the thinning ozone layer has produced dramatic increases in cases of
A) asthma and color blindness.
B) cataracts and skin cancer.
C) vitamin D deficiency and hearing loss.
D) skin cancer and retinal detachment.
B
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A catastrophic earthquake is one with a magnitude over 9.0. It has strong effects over areas thousands of miles in diameter. Catastrophic earthquakes are recorded about once every
A) month. B) 2 years. C) 20 years. D) 500 years.
On an upper-air chart, the wind aloft tends to blow ____
A) at right angles to the isobars or contour lines B) parallel to the isobars or contours C) at an angle between 10o and 30o to the contours and towards lower pressure D) at constant speed
Large areas of Russia are dominated by:
A) Coniferous forest B) Desert shrub C) Tropical savanna, mixed grassland and woodland D) Tropical forest
Conversion of pyrite to limonite is an example of:
a. hydration b. hydrolysis c. carbonation d. oxidation