Answer:
Swallowing contaminated water
Explanation:
The most common way to become infected with giardia is after swallowing unsafe (contaminated) water. Giardia parasites are found in lakes, ponds, rivers and streams worldwide, as well as in public water supplies, wells, cisterns, swimming pools, water parks and spas.
We talk for many reasons, most of all it's for a purpose
Answer:
The skin covers almost all parts of your body to prevent infection from pathogens.
Explanation:
If it is cut or grazed is immediately begins to heal itself, often by forming scad,scar, which preventprevents infection as the skin acts as a physical barrier.