What is the significance of chitin in arthropods?

Select the best answer for the question, ly 12. which of the following behaviors is not an inherited behavior?

(drag each tile to the correct location.) categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. - a tentative statement used to guide scientific investigations. - makes predictions about future events. - can be tested by many independent researchers. - based on observations of natural phenomena. - a well-established, highly reliable explanation.

How many major plates cover the earth