What would be the cause of a severe stomach ache of a teen​

The germs that cause infections are mainly spread in what three ways? a. immunization, mucous membranes, not washing hands b. germ-laden droplets, direct contact with body fluids, insects c. hand hygiene, sickness, immunization d. not enough sleep, low oral hygiene, germs

What is psychological dimensions? (meaning)

How can the stress response be used in a way. for example to build resilience.