Answer:
My best guess would be boil it!
The lymphatic system is an important part of the immune system. The lymph nodes filter lymph fluid as it flows through them, trapping bacteria, viruses, and other foreign substances, which are then destroyed by special white blood cells called lymphocytes. Bone marrow.
Answer:It would be all of them
Explanation: Because they all give ideas on how "could a school reduce its use of energy resources