You Want to Test Charles Darwin's Prediction That an Orchid

question 18

Multiple Choice

You want to test Charles Darwin's prediction that an orchid with long pollen tubes has a pollinator with long,thin mouthparts that can reach the bottom of the elongated nectar tube.You place nets over some orchids,which allows pollinators with small,short mouthparts to enter but prevents the entry of pollinators with long,thin mouthparts.Next,you compare the number of seeds produced by plants with and without the nets.In this experiment,seed production is a(n)

• A)dependent variable.
• B)hypothesis.
• C)theory.
• D)independent variable.
• E)standardized variablE.

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Definitions:

Full Employment GDP

An economic condition where all available labor resources are being used in the most efficient way possible, reflecting the highest level of economic output.

Unemployment Level

The fraction of working-age individuals without a job, yet actively trying to find one.

Output

The complete volume of goods or services created by a firm, industry, or the economy as a whole.

National Debt

The cumulative sum of funds a nation's government owes due to borrowing, which remains unpaid.