The correct answer is letter C
Explanation: Conducting scientific experiments is the ideal opportunity to identify the effects of a lurking variable on the response variable. Not all experiments all approved, sometimes performing the experiments are the only way to find out the effects.
Answer:
Two hairs from the same head may not have the same morphological characteristics.
Explanation:
The medulla is the hair core that is not always present. ... Hair can best be characterized as originating from an animal be examining..... Both the medulla and cuticle. T/F: Two hairs from the same head may not have the same morphological characteristics.