Answer:
A primary consumer
Explanation:
A food web comprises of different food chains being merged. It is a representation of the feeding relationships which living beings have with others. It represents a community where food energy is transferred from one source to another. The source of food energy in plants. They are the producers. Te food energy gets transferred from the producers to the herbivores to carnivores.
Researchers often use computers in their experiments to keep from influencing the participants and to keep themselves <u>blind</u> regarding the conditions to which the participants have been assigned.
<h3><u>Why is research blinding crucial?</u></h3>
Blinding is crucial to prevent bias (such as observer bias and demand characteristics) and guarantee the internal validity of a study.
Participants may alter their behavior in ways that affect the outcome that researchers are aiming to measure if they are aware of whether they are in a control or treatment group. If those providing the treatment are aware of the participants' assigned groups, they may treat them differently, which could either directly or indirectly affect the outcome.
Learn more about research blinding with the help of the given link:
brainly.com/question/3453118?referrer=searchResults
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Well I can tell you Germany goes for air pollution,srry the other two idk.
