13. Jane wants to figure out which of two foods is the healthiest for her pet gerbil, Bob, so she decides to conduct an experiment. She feeds Bob food A for two weeks and then measures how much Bob weighs. Then she switches the food to
gerbil food B for two weeks and measures how much Bob weighs. Throughout the experiment, she gives Bob the same
amount of water each day, and keeps the temperature in the room constant.
What is the independent variable in this experiment?

The type of food Bob is given.

Explanation:

An independent variable in an experiment is the variable that is changed. Here, the type of food is the only thing that is changed and the amount of water, temperature and other variables were kept constant (same). Thus, the independent variable is the type of food Bob is given.

i believe the answer is c

earthquakes in florida are rare because the state is not located near any tectonic plates. in fact, florida is tied for first place as having the fewest earthquakes of any state. much of florida is limestone and seafloor materials that is not conducive to earthquakes.

explanation: