Why does the Leaning Tower of Pisa lean? Is it likely to lean so much it will someday fall over? What will be an ideal response?
One reason the tower leans is groundwater subsidence. It began to lean shortly after construction due
to compaction of the ground beneath it. The tilt increased in the 1960s as the community withdrew
groundwater from the underlying aquifer. The tower is not likely to fall over because the withdrawal of
groundwater is now well regulated and the base of the tower has been stabilized, so the tower should
stand for several more centuries
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The potassium-argon dating method is applied to dating potassium feldspar in rocks. But it is important to keep in mind just exactly what the resulting numbers mean. For each example, indicate which geologic process or event is being dated:
• A potassium-argon date of 2.3 million years on potassium feldspar in a volcanic rock • A potassium-argon date of 535 million years on potassium feldspar in a metamorphosed volcanic rock • A potassium-argon date of 164 million years on potassium feldspar in a clastic sedimentary rock What will be an ideal response?
What is the difference between slate and phyllite? What will be an ideal response?
Detritivore
What will be an ideal response?
Ecological biogeography examines the distribution patterns of plants and animals from the viewpoint of ecological factors and the interrelationships between species.
a. true b. false