I think it's called a hypothesis
Cold blooded, lay eggs in water, and respire both by skin and lungs, and they have a three-chambered heart.
Answer:
an indicator helps us to see the equivalence point (or end point of the valuation) during a titration experiments by causing the color change.
Explanation:
Answer:
The fourth plant that receives pure water is the control group.
Explanation:
The election of a control group is essential in an experiment. Its principal purpose is to allow the discrimination of the results obtained by the treatment in the study, in this case, <em>the different concentrations of salty water that each plant receives</em>. The control group provides a reference point. It must be selected from the same population of the treatment groups. Both groups must be similar in every variable that might influence the results, <u>except for the study treatment.</u>
