Answer:
When you have too little hemoglobin or not enough red blood cells, your body doesn't get enough oxygen so you feel tired or weak.
Explanation:
idk but i think it is the peripheral nervous system
Answer:
A. The sun
Explanation:
The sun, because there has been theory’s of the sun being able to heat earth from there being a lot of iron in the middle of earth
Answer:
Two examples of a body system are the respiratory system and digestive system.
Explanation:
