Name 3 controlled variables in Francisco Redi’s experiment
1. The type of meat used in the experiment: Redi used two different types of meat, one covered with gauze and one uncovered, to test the effect of flies on the generation of maggots. Keeping the type of meat consistent (such as using the same type of meat from the same source) would be a controlled variable in this experiment.
2. The size of the jars used: Redi used glass jars for his experiment, with one jar covered with gauze and one left open. Keeping the size of the jars the same would be a controlled variable to ensure that any differences observed are due to the presence or absence of flies rather than variations in the size of the environment.
3. The location and environment in which the experiment was conducted: Redi performed his experiment either outdoors or in a room with open windows. Controlling the environment, such as ensuring the temperature, humidity, and lighting conditions were the same, would be important to eliminate external factors that could influence the results.