My grandparents, my parents, and I have been very active members of the same organization; The nature Conservancy

I thin it would be a comma rather than a semi colon after the word organization, but I am not sure if that is the question you are asking.

Explanation:

i'm from oregon, but i don't understand your question

the answer is: apostrophe and allusion.

apostrophe refers to a poetic technique that is used to address an absent individual or an abstract idea/being. allusion on the other hand is a poetic technique that being done by making an indirect reference to other person with a high level of significance (could be historically or culturally significant)