Which of the following defines an ordinary thunderstorm?
A. a storm that does not produce lightning or thunder
B. a scattered or isolated storm that is not severe
C. a storm that has a tilted updraft and downdraft
D. a storm that does not produce hail
Answer: B
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At the start of the Triassic, most of the continents were above sea level, and sediments from that time are often red because ________
A) the dry climate baked clays to form hornfels B) there are extensive dune fields C) they contain extensive deposits of iron ore D) they include iron oxides E) they are a major source of uranium and red quartz
________________is (are) a key nutrient that drives the synthesis of hormones as well as the growth of membrane tissues in humans
Fill in the blanks with correct word
A sea breeze is a local wind that blows at night from a region
A. of high elevation to low elevation. B. over the ocean toward land. C. of low pressure to high pressure. D. none of the above
What has been attributed to the deadly viral epidemic among dolphins in the western Mediterranean?
A) DDT B) Refined oil spills C) PCBs D) CFCs