Which of the Following Marks the Boundary Between the Crust

question 70

Multiple Choice

Which of the following marks the boundary between the crust and the mantle?

• A)a decrease in P-wave velocity and a change in rock type
• B)an increase in P-wave velocity and a change in rock type
• C)a decrease in P-wave velocity,but no change in rock type
• D)an increase in P-wave velocity,but no change in rock type

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Definitions:

Cytokinin

Plant hormone that promotes cell division in shoot apical meristem and cell differentiation in root apical meristem. Often opposes auxin’s effects.

Fleshy Fruits

Types of fruits that have a soft, edible part developed from the ovary of a flower, typically containing seeds.

Embryo Sporophyte

An early stage in the life cycle of plants where the organism is in a form that will develop into a spore-producing plant.