What characteristics classify organisms as animals?

There are certain physical and internal aspects of living organism that is used for the classification of animals.

Explanation: The characteristics that define an organism to be classified as animal are:-

Segmentation that defines the segments on the bodies of the animals which are of different kindWhether the animal is in the category of chordata or non-chordata Presence of embryo stage and number of tissue layers that are getting formed while the organism is developingThere are most chances of sexual reproduction.

Las letras son A, C, G y T, que simbolizan las cuatro subunidades de nucleótidos de una banda ADN - adenina, citosina, guanina, timina, que son bases covalentemente ligadas a cadenas fosfóricas.

1.adenina,

2.citosina,

3.guanina,

4.timina,