| A | B |
|---|
| virus | disease-causing particle smaller than a cell, can't reproduce without invading a host |
| host | living thing that provides a home and/or food for a parasite |
| parasite | organism (or virus) that survives by living on or in a host, and harms it |
| antibodies | substances that prevent infection, vaccines help your body make them |
| antibiotics | chemicals that weaken or destroy bacteria |
| symbiosis | relationship between 2 organisms on/in/near each other, at least 1 benefits (neither harmed) |
| pathogen | living thing that causes disease |
| decomposer | living thing that gets its energy from breaking down dead things (such as into soil) |
| vaccine | a shot that causes your body to create antibodies to prevent infection |
