I'm pretty sure it's Waterborne Diseases.
Waterborne Diseases are caused by Pathogenic Microorganisms that most commonly are transmitted in contamination in Fresh Water.
I hope that helped.. •ᴗ•
Answer:
C
Explanation:
It's best to state your boundaries firmly so peer pressure doesn't continue
Answer:
White blood cells kill pathogens when your skin becomes infected
I think it would be D? It would make the listener more interested
Answer: Classification of bones
Explanation:
Long: emur, tibia
Short: wrist bones
Flat: the scapula, a bone in the shoulder region
Irregular:
vertebrae, sacrum, coccyx