Answer: lithosphere (land), hydrosphere (water), biosphere (living things), and atmosphere (air).
Explanation: Hope this helps!!!
They break down the organic matter that has died so that the nutrients stored with in it can be reused.
As the tissue heals, new scar tissue is created inside of the damaged heart tissue, thus it doesn't pump as well as healthy heart tissue
Answer:
Question is not presented
Explanation:
