You could look at it and see if it has any of the 8 characteristics of living things.
An example of <span>nonsubstituted alkane that can exist as one of only two isomers is Butane with molecular formula </span>
<span>.</span>
Isomers are those having the same molecular formula but different chemical structure.
Non-substituted alkane means it is not substituted by any other atom.It has only carbon and hydrogen atoms attached to it.
I would say that the answer is A. Answers B and C are definitely wrong because DNA in eukaryotic cells are in the nucleus while two identical daughter cells are created from asexual reproduction. Answer D is wrong because you can compare two different organisms like a human and a dog. Since both are eukaryotic they will have eukaryotic cell structures with their organelles. I believe that A would be correct, if you remember the the level of organizations, then you know that cells are simple, as cells become tissues, they become a little complex, as tissues become organs, they get a little complex, finally when organ systems are formed, they are highly complex from the organs, tissues and cells. Hope that answered your question.
I think that would be answer choice b because it states in the question "existed earlier in time" and evolution is basically things that existed at an earlier time adapting to environmental changes to evolve into something different for their benefit
Pores called stomata enable plants to exchange oxygen and carbon dioxide. If it weren't for these pores, the plants wouldn't be able to perform such an action.