By mass
The liver
In general
The skin
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.
Answer: they are not living things
Explanation: The virus needs a living cell to multiply because on they're own they can't do anything.
Sea level - 100%
mid-level elevation - 4500M and 57%
Peak - 8850M and 33%
Yes this is true sort of like when light rays pass through water particles in the atmosphere and create a rainbow :)