Question

a bacterium was discovered in several hot springs. the temperature of the springs can range from 50 to 80 degrees celsius. scientists investigate an enzyme from this bacterium. they set up the data table show to record their results. what is the independent variable (the one the scientist is manipulating)?

Explanation:

In an experiment, the independent variable is the one that is changed or manipulated. Here, the scientists are changing the environmental temperature (as seen in the table with different temperature values like 5°C, 22°C, etc.). The reaction rate is likely the dependent variable (changes based on temperature), time is a controlled variable (measured at specific intervals like 0, 5, 10, 20 minutes), and enzyme culture is the subject of the experiment.

Answer:

Environmental Temperature