Read the passage.
scientists long believed that the discovery of a mummy in the alps, known as ötzi the iceman, provided information on
how humans lived 5,300 years ago. more recently, scientists used dna analysis to discover that ötzi's and modern-day
humans have dna markers in common.
how did the study of otzi's dna change the way scientists viewed the development of modern humans?
they learned that ötzi the iceman was a close relative of today's humans.
they learned that early humans developed differently and died off from the cold.
they learned that the dna found in early humans can be found in today's humans.
they learned that the dna of early humans was much older than they originally believed.

fmr1 gene that can lead to fragile x-associated disorders.

explanation:

the answers is b.   environments.

after the civil war, and with the termination of slavery, the south was faced with a big problem; what was supposed to happen and how they were supposed to deal with the freedom and the rights that black people and freed slaves had gained as a result of the north defeating the south and forcing the end of slavery. first, most, if not all, of the workforce of the south came from slaves and they did not have an option to replace the loss of said workforce. second, particularly in the south, people were convinced that black people were lesser, less intelligent, less capable and less smart than whites. this posed a huge problem for them. also, southerners were faced with another issue; freed slaves now had a say in how their lives would be lived and the right to politically choose the way they would be governed. people in the south did not want to accept this, none of this and this opposition and the conflicts that arose from it, not to mention the afereffects of the war, forced the congress of the time to enact and enforce the reconstruction plans that had been proposed by president andrew johnson.