Introduction Which Design Do Researchers Use to Study a Possible

question 20

Multiple Choice

Introduction Which design do researchers use to study a possible causal relationship
Between preexisting antecedent conditions (e.g., smoking) and behavioral
Effects (e.g., lung cancer) in human subjects?

• A)causal modeling
• B)correlational
• C)experimental
• D)quasi-experimental

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Definitions:

Tissue Layers

Various layers of cells in an organism that have specific functions and form organs and other body structures.

Cnidarians

A phylum of aquatic invertebrate animals that includes jellyfish, corals, and sea anemones, characterized by their radial symmetry and stinging cells.

Spicules

Small, pointed structures made of silica or calcium carbonate serving as a skeletal element in sponges and other invertebrates.

Flagella

Long, slender appendages that protrude from the cell body of some bacteria, protozoa, and spermatozoa, used for locomotion.