Need ! due in 20 min which lists three living units of the human body in order from the simplest to the most complex level of organization? a) red blood cell- circulatory system-blood b) nervous system- nerves- brain c)red blood cell- heart tissue- circulatory system d) bone tissue- skeletal system- bone

The terrestrial planets are characterized by having a a.) silicate core b.) iron-rich silicate core c.) iron-rich metallic core d.) none of these

The unique structure of the neuron is dedicated to the efficient and rapid transmission of neural signals. the relationship between neurons, the spinal cord, and the brain constitutes an elaborate communication system throughout the human body. all but one of the functions listed below are a result of this interaction.

1. describe the structure and function of the specialized cells you observed in the video. 2. research the types of cells present in the kidney.