Need correct answer for 9 and 10. Thank you! 9. The only type of plate boundary

Question

Need correct answer for 9 and 10. Thank you!

9. The only type of plate boundary at which there is no vertical transfer material between the lithosphere and asthenosphere is a a. subduction zone. b. transform fault. c. oceanic ridge. d. This is a trick question-vertical transfer occurs at all plate boundaries 10. The presence of tropical plants and animals hun- dreds of millions of years old near the North Pole suggests that a. Earth's surface has cooled significantly since those organisms died. b. Earth's surface has warmed significantly since those organisms died.

Explanation / Answer

Q9) Answer - option b- transform fault

Transform fault or transform boundary is a fault whose motion is predominantly horizontal , it ends abruptly and is connected to another fault, so the fact that the motion is horizontal, there is no vertical transfer of material.

Q10) Answer- option a

The presence of tropical plants and animals at north pole gives the hint that the poles used to have a tropical climate, i.e. they were warmer than they are presently so by that we can say that when the earth's surface cooled and poles become much colder then some of these plants and animals died there and the others moves to the present tropical zones in order to survive.

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