The Following Are Types of Threats to Internal Validity: Maturation

question 22

True/False

The following are types of threats to internal validity: maturation, history, participation, and attrition.

---

Definitions:

Carbon Dioxide

This gas, which lacks both color and odor, is created from burning carbon-containing materials and through the act of respiration. It's a natural part of the air and is consumed by plants for photosynthesis.

Nucleotides

The basic structural units of nucleic acids, like DNA and RNA, consisting of a sugar, a phosphate, and a nitrogenous base.

DNA Nucleotides

The basic building blocks of DNA, consisting of a sugar (deoxyribose), a phosphate group, and one of four nitrogenous bases (adenine, guanine, cytosine, or thymine).

RNA Nucleotides

The basic building blocks of RNA molecules that include adenine, cytosine, guanine, and uracil, which pair to encode genetic information.