Liam did an investigation to see how water temperature affects the amount of salt that will dissolve in the water. he filled 4 beakers with exactly 100 milliliters of water each. he then heated each beaker to a different temperature and tested salt solubility at each different temperature. what was liam's independent variable?
amount of water in each beaker
the number of beakers
the amount of salt that dissolved in each beaker
the temperature of the water in each beaker

The correct answer is the temperature of the water in each beaker.

Explanation:

The independent variable is understood as one that can vary from one case to another, so that the researcher can obtain different results from the dependent variable being studied.

In this case, the dissolution of salt in water is the study variable. The temperature varies from one beaker to another, which is why it is our independent variable.

The amount of water in each beaker is the same, the beaker number is fixed, and the amount of salt added to each beaker is the same, this is to see how much salt dissolves at different temperatures.

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the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees. 

attach the statements so i can answer : )