March 5 block 4 and 8

1. review 'germs' what they are and types (bacteria and viruses)













2. video: innate immune system: https://youtu.be/PzunOgYHeyg

3. Activity 1 from The Vaccine Makers Project: https://vaccinemakers.org/sites/default/files/lessons/HS.activity1.%20Castle%20of%20the%20Body.unit1_.lesson2.FINAL_.pdf