According to the information in the fragment, it can be inferred that it is an example of how scientific development has consequences on pre-established theories and new areas are created in science (option C)
<h3>What is a scientific theory?</h3>
A scientific theory is a term to refer to a set of concepts and observations that are proposed as principles to explain a class of phenomena.
According to the above, the discovery of germs and their relationship with human diseases was an event that changed scientific theories about human diseases because it demonstrated a different explanation than what was believed up to that time.
So, the correct answer is option C because this event changed scientific theory and opened new fields for scientific study and research.
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Friction is directly related to air particles.
When we say that friction is high, it means that you're colliding with lots of air particles, and hence you can't speed up as easily.
Thus, the more air particles you encounter, the higher the friction.
The faster you go, the more particles you will encounter in a given time; hence at higher speeds, the friction is higher.
An experiment can only be considered valid if it can be repeated several times and end up with the same results. Some scientists like to repeat experiments in order to gain skills and develop new methods for the experiments.
