In Tidal Pools,a Food Pyramid Is Inverted with a Small

question 30

Multiple Choice

In tidal pools,a food pyramid is inverted with a small base of phytoplankton supporting zooplankton consumers.How can this be explained?

• A)The pyramid is an energy pyramid and the trophic level occupied by zooplankton contains more energy than the level occupied by phytoplankton.
• B)The pyramid is a numbers pyramid showing that only few phytoplankton support many zooplankton.
• C)These phytoplankton are actually deriving their food from dying animals,thus the pyramid is inverted.
• D)The pyramid is a pyramid of biomass and the standing crop of phytoplankton has less biomass than the standing crop of zooplankton.

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Definitions:

Leverage

The use of borrowed money to increase the potential return of an investment, which can also magnify the potential loss.

Margin

The difference between the selling price of a product or service and its cost, or the borrowed funds used to invest in securities.

Margin Call

A demand by a broker that an investor deposits further cash or securities to cover possible losses.

Initial Margin

The initial margin is the upfront investment required when buying on margin or entering a futures contract, acting as a security deposit for the trade.