Biology 1 Homework help!!?

Biology 1 Homework help!!?



Theres a question on my homework for my Biology 1 class i dont know and cant find anything on google for it. 
Here the question: 

"List the levels of complexity that biologists use to study living organisms (Biosphere to gene)." 

I dont have my notes or book with me to look (irresponsible, i know. Dont bother commenting about it), so if anyone knows the answer can you please help! 
Theres 6 lines on the question which im guessing is 6 levels. 

Thank you to anyone answering!!





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