An unidentified lab sample is found. What two molecules would confirm that the sample is urine
Glucose and ketones
Urea and creatinine
Uric acid and amino acids
Protein and amino acids

the independent variable, the one that is intentionally manipulated, is whether or not the car hits the barrier.

the dependent variable, the one that you measure the response in, is the distance that the washers travel.

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

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