Figure 21.1 Use the Diagram Above to Answer the Following Questions

question 46

Multiple Choice

Figure 21.1
Use the diagram above to answer the following questions.
-Identify the letter that indicates where most nutrient and waste exchange occurs between the tissue and blood.

• A) A
• B) B
• C) C
• D) D
• E) E

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Definitions:

Experimental Situation

An environment created by a researcher designed to manipulate variables to test their effect on behavior or perceptions.

Independent Variables

are variables in an experiment that are manipulated or controlled by the experimenter to investigate their effect on dependent variables.

Independent Variables

In an experiment, these are variables manipulated by the researcher to observe how they affect the dependent variable.

Typing Speed

A measurement of how many words or characters one can type in a set amount of time, often gauged in words per minute (WPM).