<span>Variation among individuals in a species is real and important.</span>
Nationalism means the belief of groups of people who are bound by cultural, territorial and ethnic. The answer is A. Centripetal forces. These are forces in a state promoting stability, unity and giving the strength thus binding a state together such as having strong national culture.
The increased pressure forces the carbon chain structure of whatever element into a crystalline structure since that's the most resilient molecular structure. so is A