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Question: Which level of classification contains all the others
Answer: 
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Option B)
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Answer:
The correct answer will be- true and structural specializations
Explanation:
The evolution of life on earth has suggested that life has moved from the simplicity to complexity or from single-celled organism to multicellular organism.
This multi-cellularity is achieved through the property of called cellular differentiation and specialization. as the cellular complexity increases, therefore, cellular demands like the use of energy, food, water and other variables increased.
This lead to the formation of the organ and organs system specializes to perform specific functions like the digestive system and another biological system.
Thus, true and structural specializations are the correct answer.
Answer:
because of gravitanal pull
Explanation:
<span>All living organisms are divided in into prokaryotic (lacking a nucleus) and Eukaryotic cells - with a nucleus. Viruses form an exception because they are not exactly "living organisms" - they cannot live outside of their hosts (they have to live in another cell, so they are not a cell by themselves) - the answer is that they cannot live by themselves, only withing other cells (prokaryotic or eukaryotic) </span>
