I believe the answer you are looking for has to do with cells, they are the basic building block of life and are the smallest life that can support itself.
Answer:
commensalism
Explanation:
One organism is benefited while the other is not harmed or benefited.
Answer:
You can look at the DNA under an electron microscope and analyze it
Explanation:
what else would you do with DNA eat it? Feed it to your dog?
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