The article talks about two main ways to define life. One definition focuses on self-organization and self-maintenance. The other definition focuses on self-replication and evolution. Which definition of life are viruses definitively excluded from? Why are they excluded from this definition? How does the author defend the exclusion of viruses from the other definition as well?

answer; ///i believe that the correct answer is (the worksheet);

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

"a.) well–developed vascular system."

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: