Contrast cartilage and bone, and state the advantages of a bony exoskeleton relative to a cartilaginous exoskeleton.

Which gas found in the earth's atmosphere greatly impacts the daily range of temperature on earth. a) oxygen b) hydrogen c) nitrogen d) water vapor

The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.

What might explain the real-world results, show in the graph to the right, for one class of twenty students? check all that apply.