Answer:
It's important for a scientist to try to hold all variables constant except for the independent variable. If a control variable changes during an experiment, it may invalidate the correlation between the dependent and independent variable. When possible, control variables should be identified, measured, and recorded.
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I think it is the following;
Reproduction
Multicellular or Unicellular
Autotroph or Heterotroph
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I am so sorry if this is not correct.
Answer:
Explanation:which location and also send the diagram, but there some processes like evaporation, condensation etc.
The answer is (C) Replication
Though occasional errors could occur in cells during replication; the cells have error checking and proofing mechanisms that reduce the rate of error to one to several million replications in higher eukaryotes.
After all, one mismatch error during replication would not result in major effects. The others choices, however, have higher rates of causing genetic abnormalities.