True! because if you have more than one variable, you aren’t going to know which variable changed the dependent variable.
In humans, the maintenance of a stable internal temperature is a direct result of Homeostasis. Homeostasis is the ability of the body to maintain an equilibrium condition within it's internal environment even when dealing external changes. Homeostasis happens in human when there is an effort exerts by the body to regulate it's internal temperature around 98.6 degrees Fahrenheit. For example, during summer days we produce sweat for our body to cool off, and during winter we shiver for our body to produce heat.
Answer:
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Explanation:
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<em>The number of flights performed globally by the airline industry increased steadily since the early 2000s and reached 38.9 million in 2019. However, due to the coronavirus pandemic, the number of flights dropped to 16.4 million in 2020.</em>
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Answer:
To replace dead or damaged skin cells.
Explanation:
Comparative with a wide range of variables