Juan Wants to Compare the Effectiveness of Two Drugs in Treating

question 28

Multiple Choice

Juan wants to compare the effectiveness of two drugs in treating migraines. He administers Drug A to a participant and then Drug B to the same participant eight hours later when Drug A is still in the participant's system. In this case, the study is contaminated by a _____ effect.

• A)fatigue
• B)carryover
• C)order
• D)practice

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Definitions:

Lithosphere

The rigid outer layer of the Earth, composed of the crust and the upper part of the mantle.

Earth's Crust

The outermost layer of the Earth, comprising a thin layer of rocks and minerals that houses the planet's oceans and continents.

Upper Mantle

The region of the Earth's mantle that lies just beneath the crust and extends to deeper mantle layers, involved in tectonic movements.

Moderate Temperature

A climate condition characterized by neither extreme heat nor extreme cold, often considered ideal for human habitation and agriculture.