Answer:
The correct answer is option a. "performance decreased when landmarks were removed that had been viewed longer".
Explanation:
Hamid and collaborators while recording eye movement in a group of participants that were trying to figure out how to navigate a maze. Part of the study was to put landmarks that would not aid maze navigation and then remove them. Even tough the landmarks would not aid maze navigation they helped the participants in other means, probably the ones located at corners were most helpful and the ones that were there since the study started. This is explained by the fact that performance decreased when landmarks were removed that had been viewed longer.
20 is the Number of Neutrons of potassium.
Variation is any difference in organisms of the same species, whereas gradualism is a microevolutionary theory.
<h3>What is a scientific theory?</h3>
A scientific theory is a given explanation on a phenomenon from the real world (e.g., the evolution theory).
The fossil record is a piece of evidence for the evolution theory (which is mainly based on natural selection).
In conclusion, variation is any difference in organisms of the same species, whereas gradualism is a microevolutionary theory.
Learn more about natural selection here:
brainly.com/question/4207376
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There are approx 100 billion
