An experiment is always carried out to determine the cause and effect relationship between two variables.
An experiment is always carried out to determine the cause and effect relationship between two variables. The only way that we can establish cause and effect relationship is to make use of the conducting of an experiment.
Now;
The independent variable is the amount of caffeine
The dependent variable is the hearth rate of the earth worm
The hypothesis in this experiment is that; "The increase in the amount of caffeine increases the heart rate of an earth worm"
Learn more about experiment:https://brainly.com/question/255178
#SPJ1
Missing parts:
In the same science fair,Tina ask the question "does caffeine increase the heart rate of an earthworm?" In test 1,she measures the heart rate by looking at the earthworm under a microscopes, the heart rate if 50 beats per minute. In test 2,she places a few drops of caffeine on the earthworms skin and measures the rate again.in this test the heart rate is 68beats per minute
What is the independent variable in this experiment
What is the dependent variable in this experiment
Tina's experiment should have included a hypothisis .in a complete sentence,suggest a hypothesis for Tina's experiment
