1. Human System
Do Now

2. What organs make up the respiratory system?
Do Now # pg. 31
What organs make up the respiratory system?
Is an organ a system? Why or why not?
List 4 things that happen to your body when you exercise.

3. Do Now # Pg. 31
Give an example of a subsystem of the circulatory system.
How is the human body like a cell?
Arrange from simple to most complex:
Earth, human population, tissues, molecule, Universe, organelle, galaxy, solar system, Organ system (ex. digestive system), atoms, Organism (ex. human), Cells, Organ

4. Atom, molecule, organelle, cell, tissue, organ, organ system , organism(human), human population, earth, solar system, galaxy, universe.