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Salsk061 [2.6K]
2 years ago
11

A controlled experiment measures the effect of one variable? True or false

Biology
1 answer:
Alex787 [66]2 years ago
5 0
I think its false for the variable

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Behavioral responses to stimuli may be adaptive. stimulus: information with potential to make an organism change its behavior. Internal stimuli tell an animal what is occurring in its own body. External stimuli give an animal information about its surroundings.
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Sickle cell disease is fairly common because __________.
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Answer:

The correct answer is - carriers of Sickel cell have advantages.

Explanation:

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