A factorial design is an experimental design in which each level of each independent variable is replicated across all levels of the other independent variables.
A 2×4 independent-groups factorial design is a type of research design that is used to study the effects of two independent variables on a dependent variable. Two independent variables, one with two levels and one with four levels, are used in a 2 x 4 design.
This design is used when there are two or more independent variables that are each manipulated by the researcher. The dependent variable is measured at the end of the experiment.
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Answer:
Examples of Human Adaptation
Diets are an example of human adaptation because the food available depends on the geographical area where humans live.
For example, the Inuit eat a lot of seal and fish because those are the most abundant sources of food in the artic, while the Mediterranean diet is abundant in fruits and vegetables because the climate of the Mediterranean is warm, and many crops grow there.
Examples of Human Modification
Aqueducts are a form of human modification. They are physical structures used to carry water from one place to another, and they can be built above ground or underground. The Romans were famous builders of acqueducts.
Examples of both
Wells are like a rudimentary aqueduct. They are digged in the ground to obtain water from underground sources, and represent both a human adaptation and modification at the same time.
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