what are some of your first thoughts about the Hetch Hetchy Valley prior to the beginning of the dam construction?

the answer to your question is b

videntify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.

i think that c)gold was found there

but i am not sure