I believe it is actually commensalism as only one of the organisms is actually deriving a benefit, for example Remora fish live on sharks and whales in order to clean them by eating particles attached to them
Answer:
There are two types of variables that can lower internal validity: extraneous variables, which are any factors that are in the experiment but not being studied, and confounding variables, which are related to the independent variable and affect the dependent variable.
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Overpopulation will result in less food, water, and shelter for all species in the web. if overpopulation is happening higher on the food web, all of their food sources connected to them will begin to lessen, endangering the sources and other competitors who eat the similar things.
Genetic mutations are the alterations of genetic materials. <u>Fatal familial insomnia</u> is a disorder, caused by a genetic mutation, involving a progressive inability to sleep.
<h3>What is fatal familial insomnia?</h3>
Fatal familial insomnia is a brain disorder that can be inherited and affects the sleep cycle. It is a neurodegenerative disease that leads to mental and physical deterioration because of a lack of sleep.
FFI is caused by a genetic mutation in the PRNP gene that alters the mechanism of the thalamus resulting in an alteration of the sleep activity that leads to exhaustion.
Therefore, <u>fatal familial insomnia</u> is the correct blank.
Learn more about fatal familial insomnia, here:
brainly.com/question/27791600
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