Las aves presentan una donde desembocan lo conductos de excreción y de reproducción. *

The virus is considered to be are living item since they have hereditary material dnas or rnas. they can imitate and change. they respond to boosts, for example, radiation, chemicals, and warmth. they have antigenic properties. they are proficient to duplicate with a same hereditary constituent.

There would be no evaporation so no water cycle