Answer:
Amount of sugar
Explanation:
An experiment has an experimental variable and a control variable. The amount of sugar is experimental variable in the give experiment. Here, boiling point of sugar solution would change in accordance to changes in the amount of sugar. Amount of water serves as control variable and is kept constant throughout the experiment.
Nuclear fusion, or fission i would say
Predation,competition,mutualism,commensalism, amensalism these are the five relationship organisms have with each other
I'm sorry but at Brainly we do not ask those type of questions.
