A Wetland Is Drained, Filled, and Planted with Corn

question 5

Multiple Choice

A wetland is drained, filled, and planted with corn.After 20 years, the farmer decides to restore the wetland and works with a local conservation agency to return the habitat to its original conditions.After some time, it becomes obvious that the species composition is very different from that of the original wetland.What is the most likely explanation for what has happened to the wetland?

• A) It has been irrevocably changed and will only be able to grow corn from now on.
• B) It is still undergoing succession and will eventually return to its original state.
• C) It is showing hysteresis and will eventually change to another type of habitat.
• D) It has formed an alternative state and will exist and undergo succession in that form.
• E) It was changed by human activity, so from now on it can only exist with human intervention.

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Definitions:

Consumption

The act of using goods and services for personal needs or to satisfy consumer desires.

45-Degree Line

A line in economics graphs that depict equilibrium points where the value of one variable equals the value of another; commonly used in Keynesian cross diagrams to show where aggregate expenditure equals aggregate output.

Saving

The portion of income not spent on current consumption, but rather set aside for future use or investment.

Trillion

A numerical value represented as 1,000,000,000,000 or 10^12, commonly used to quantify large sums, such as government budgets and the global economy.