What is the meaning of scale as it is used in the passage?

What continent is believed to be the site of the earliest giant continental land mass on earth? Where is the place and date of Aluminum? What has scales harder than steel? What is the name of a small cell? What can be caused by humans changing the environment? What is the plateau peoples vegetation? What animal weighs 200 lbs? What does the HR diagram do? Where is 3 degrees south and 60 degrees west? Nuclei that have an excess of netrons can become stable by emitting what? What did you know in the ways of separating mixture? What are the four major hypotheses mendel developed? What happens when a hurricane moves back to sea? The water vascular system of an echinoderm regulates? Does global warming have anything to do with the carbon dioxide level in the air? What function does ATP carry out in living things? 1 deciliter equals how many milliliters? How quickly can Retinitis Pigmentosa progress? What current has the greatest transport of water and what is its rate? A species that first populates a region after a natural disaster?