What do we call the variable manipulated or tested by the investigator? 1. the independent variable

2. the constant variable

3. in inference variable

4. the dependent variable

Which best describes carbon dioxide’s path out of the body

How many pounds does the earth weigh?

To take a whiff of your favorite food, you use both? a. motor nerves and your digestive system b. sensory nerves and your immune system c. motor nerves and your skeletal system d. sensory nerves and your respiratory system