text: As of 7 p.m. yesterday, two lions with Covid - 19 had lowered their fever and were in stable health condition?
classes:  No, natural sciences is concerned with the study of natural phenomena, including biological life.  Besides, natural sciences is concerned with the study of natural phenomena, including biological life.  Yes, natural sciences is concerned with the study of natural phenomena, including biological life.  Meanwhile, natural sciences is concerned with the study of natural phenomena, including biological life.