The answer should be digestion
Answer:
4. Pathogens enter and multiply in body tissues.
Explanation:
When pathogen penetrates the host defenses, infection occurs in the host. Infection is a disease of the body that is caused by invasion and multiplication of pathogens (infectious biological agents that causes diseases or illnesses to the host) such as bacteria, viruses, parasites and so on normally not found with the body. They can easily spread from their point of origin if not contained due to the multiplicability of the pathogens causing it.
Water is a component of extracellular and intracellular fluid, which is the correct scenario.
<h3>
What is the bloodstream in the human body?</h3>
Blood running through an organism's body is referred to as the bloodstream.
In humans, the circulatory system, which is made up of a complicated network of arteries and veins, is where blood travels.
- Transporting nutrients and oxygen to the tissues and lungs is one of the bloodstream's functions.
- Waste carbon dioxide from the cells is removed by the bloodstream.
To learn more about the bloodstream Please visit the below link.
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