Surface made with carbon and hydrogen would cause the most problems for the salamander that relied on hydrogen bonds to cling to surfaces.
Given that a salamander relied on hydrogen bonds to cling to surfaces.
We are required to find the surface that would cause the most problems for salamander.
Salamanders are basically a group of amphibians typically characterized by their lizard-like appearance, with slender bodies, blunt snouts, short limbs projecting at right angles to the body and if they relied on hydrogen bonds then the surface made with carbon and hydrogen would cause the problems.
Hence surface made with carbon and hydrogen would cause the most problems for the salamander that relied on hydrogen bonds to cling to surfaces.
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The ability to generalize a study's results to different circumstances is known as external validity that suffers from 7 types of threats.
<h3>What are the threats to External Validity?</h3>
There are 7 major threats to external validity.
- The first threat is sampling bias, in which a sample is not representative of the population.
- The second threat is history, where an unrelated incident can affect the results.
- The third threat is observer bias, in which the traits or actions of the experimenter unintentionally affect the results, resulting in bias and other demand features.
- The fourth threat is the Hawthorne effect, which describes the propensity for individuals to alter their behaviour merely because they are aware that they are being observed.
- The fifth threat is the Testing Effect, in which the results are impacted by whether a test is administered before or after another.
- The sixth threat is the aptitude-treatment, which involves the interaction of individual and group factors to affect the dependent variable.
- The environment, time of day, location, researcher traits, and other variables that restrict the generalizability of the results are included in the seventh threat.
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