Read the passage below. Did you know that crocodiles tend to have longer, pointed, V-shaped snouts while alligators generally have wider, rounder, U-shaped snouts?

The signal word “while” serves what purpose?

It signals a similarity between alligators and crocodiles.
It signals a difference between alligators and crocodiles.
It signals that more information about crocodiles follows.
It signals that the reader is nearing the end of the text.

During an experiment measuring the change in temperature of a chemical reaction your digital thermometer breaks. you have the same model thermometer available to use how do you proceed with the experiment a. continue on with the new thermometer b. begin the experiment again with the new thermometer c. calibrate the new thermometer and make a notation regarding the change in equipment d. calibrate the new thermometer and begin the experiment again