Which of the following is a unifying characteristic of life?

If a robot fixed another robot is it a engineer or doctor?

In the controversial scientific process of cloning, organisms are created that are genetically identical to there parent. this process would be classified as

Hich is an example of using comparative anatomy to study evolutionary relationships? comparing and contrasting the dna of two organisms studying the digestive system structure in two organisms using ancient footprints to learn about an organism’s behaviors looking at the development of a fertilized egg of an organism