Explanation:
A. chloroplast
B. vacuole
C. plasma membrane
D. Smooth endoplasmic reticulum
Answer:
Ideally, the experimental and control groups are identical. As much as possible, the two groups should overlap in every characteristic.
Explanation:
At the beginning of your study, you need your two groups to be as statistically similar as is humanly possible. That way, when you control for other variables, you can reasonably attribute any statistically significant differences at the end of the study to your intervention.
The answer is B. Peer-reviewed journals.
Results that are peer-reviewed means that they have been checked by scientists who are also experts in the same fields. And that means that the results are reliable.
Answer:
oxygen and carbon dioxide
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