Dr. Alley took this picture in Arches National Park. That is his finger. The sun

Question

Dr. Alley took this picture in Arches National Park. That is his finger. The sun was shining along the arrow, as shown, casting the shadows you see. The sample is hard stone now, but it once was soft sediment, and it records formation and

You walk down the beach on Cape Cod, where waves have been bouncing shells around, including pieces of moon-snail shells, as shown here. You find 10 identical shell pieces. All 10 look either like A or like B, but not with 5 of each. Instead, 9 of the 10 shell pieces look like one of the pictures (either A or B), while only the 10th shell piece looks like the other picture. It is very likely that this 10th shell piece looks like: A) A
B) B
2.

Dr. Alley took this picture in Arches National Park. That is his finger. The sun was shining along the arrow, as shown, casting the shadows you see. The sample is hard stone now, but it once was soft sediment, and it records formation and

Explanation / Answer

B

udpside down

right side up

right side uo

d

b`

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