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31.  A valence shell is best described as  

Which statement is least correct about scientific theories: 

Which group is the largest classification? 

In order for a muscle to adapt and become stronger, the load placed on it must be greater than what it is accustomed to.

44. The simplest and the most common monosaccharide is a six-carbon sugar called:  

6. Extinction can occur if a species is unable to adapt to a changing environment.

49. The nitrogenous base that is only found in RNA and not DNA is: 

The dotted lines are showing shared electrons within a molecule?

4. Living organisms are composed only of organic elements, whereas nonliving things are made up of inorganic elements.  

26. Which statement is NOT true about subatomic particles?