How Are the Varieties of Apples That Account for 90

question 44

Multiple Choice

How are the varieties of apples that account for 90 percent of the apples sold in U.S. grocery stores today propagated?

• A) tissue culture
• B) cuttings
• C) seeds
• D) grafting
• E) cloning

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Definitions:

True Experiment

A research design that includes random assignment of participants and manipulation of an independent variable to examine its effect on a dependent variable.

Confounding Variable

A variable outside of the researcher's control that might affect or provide an alternative explanation for the results in a scientific study.

Factorial Design

A statistical experiment design used to evaluate the effects of two or more variables systematically across different conditions.

Violent Movies

Films characterized by scenes of physical aggression, conflict, and often harm or danger to individuals.