I would say the first one a comet. :)
Since Jordan needs to use the high power objective in order to view the specimen under the light microscope. He should use the ocular lens in order to view the high power objective which is placed in the objective lenses. So he needs to use the ocular lens for viewing and the objective lens to magnify and see the specimen clearly on the stage.
This means having no charge
Nitrogen and Oxygen make up the greatest percentage of the atmosphere.
Hope I helped love! <3
