Which of the Following Could Qualify as a Top-Down Control

question 87

Multiple Choice

Which of the following could qualify as a top-down control on a grassland community?

• A)limitation of plant biomass as a result of nitrogen deficiency
• B)effect of grazing intensity by pronghorn antelope on plant species in the prairies
• C)influence of rainfall on competition among plants
• D)influence of shade on the abundance of flowering plants and ferns

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Definitions:

Scarcity

A fundamental economic problem of having seemingly unlimited human wants in a world of limited resources.

Resources Are Limited

A principle stating that the availability of physical, natural, and human resources is finite, necessitating choices and trade-offs.

Opportunity Cost

The cost of forgoing the next best alternative when making a decision, representing the benefits one could have received by taking a different decision.

Attending College

The act of enrolling in and going to a college or university to pursue higher education.