In the Last 20 Years One Concern of Scientists Who

question 45

Multiple Choice

In the last 20 years one concern of scientists who study amphibians is that

• A)genetic diversity is being increased too rapidly for proper maintenance.
• B)the edge effects are causing declines in species numbers.
• C)DDT is affecting reproduction by thinning the egg membranes.
• D)populations are diversifying rapidly and speciation is occurring.
• E)many species are declining or have gone extinct in recent years.

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Definitions:

Geographical Area

Refers to a specific physical region or location on Earth, identified by its natural or human-made characteristics.

Effective Cartel

A group of independent market participants who collude to increase their profits by attempting to manipulate market prices or limit market supply.

Pure Monopoly

A market structure where a single firm or entity controls the entire supply of a product or service, with no close substitutes.

Oligopolistic Industry

An industry characterized by a small number of firms that have significant control over market prices and high barriers to entry.