Which of the following options provides the proper sequence of events in a lightning flash?
A. dart leader, return stroke, stepped leader, return stroke
B. return stroke, stepped leader, return stroke, dart leader
C. stepped leader, dart leader, return stroke, return stroke
D. stepped leader, return stroke, dart leader, return stroke
Answer: D
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The evolution of the notochord in chordates permitted a more complex embryonic development. Indicate whether the statement is true or false
Distinguish between relative age and absolute age. Give an example of each type of age
What will be an ideal response?
Folded mountains, such as the Himalayas, are created by compression
A) associated with the movement of magma. B) from converging tectonic plates. C) along a transform fault boundary. D) none of the above
The Himalayas are:
a) the highest mountain range in the world and contain Earth's highest peak b) along the south flank of the Tibetan Plateau c) underlain by abnormally thin lithosphere d) an ancient mountain range with most uplift occurring 200 million years ago e) both a and b