Sea Otters Have Been Used as an Example of the "Keystone

question 29

Multiple Choice

Sea otters have been used as an example of the "Keystone Species" concept.This means that sea otters

• A)provide the carnivorous component of the food chain in which they live.
• B)promote the edge effect in the kelp forests off the northern coastline of California.
• C)exert a particular strong influence on the structure and functioning of an ecosystem.
• D)offer an opportunity for scientists to study the long-term effects as the sea otter populations are harvesteD.
• E)interactions with the kelp forests and the sea urchins have not really had any consequences that need to be currently studied.

Recognize the variability in the age at which infants reach developmental milestones.

Describe the importance of manual dexterity in early childhood development.

Understand the developmental implications of brain myelination and synaptic pruning in early childhood.

Understand the legal implications of misrepresentation and breach of warranty in sales.

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Definitions:

Elasticity of Supply

The measure of how much the quantity supplied of a good changes in response to a change in price.

Income Elasticity

A measure of how much the quantity demanded of a good responds to a change in consumers' income, holding everything else constant.

Housing Demanded

The quantity of residential properties that buyers are willing and able to purchase at a given price level.

Demand Elasticity

A quantification of the effect of price variation on the demand level for a specific good.