Transmission is the stage in which the infectious agent gains a host and infects it. There are three main modes of transmission:
A. The transmission by contact:
Human-to-human transmission
Auto-infection (Some infections are endogenous, that is, they are caused by microorganisms that are part of normal flora but can become opportunistic pathogens.)
Indirect Contact Transmission (Indirect Contact Transmission refers to the propagation of a pathogen from a reservoir to a host through an object)
Droplet transmission (when a person coughs)
B. Transmission by a vehicle
Waterborne transmission
Foodborne transmission
Air transmission
C. Transmission by an animal vector
Mechanical transmission (In this type of transmission, insect vectors propagate infections passively.)
Biological transmission (This mode of transmission of vector-borne infections is much more complex, since the vector plays an active role in it.Normally, passage through the vector represents an essential step in the development of the pathogenic microorganism.)
I know the answer to number 2 should be resources
<span>To get the most use from your exercise, stay in your target heart rate range for at least 20 minutes during an exercise session.</span>
<span>1.design or provide with a form that presents very little resistance to a flow of air or water, increasing speed and ease of movement."streamlined passenger trains"<span>synonyms:<span>aerodynamic, smooth, sleek"streamlined cars"</span></span>2.make (an organization or system) more efficient and effective by employing faster or simpler working methods."the company streamlined its operations by removing whole layers of management"<span>synonyms:<span>efficient, smooth-running, well run, slick.<span /></span></span></span>
Answer:
Here are ideas to keep in mind-----
Keep Your Neighborhood Clean. If you see trash on the ground, toss it in a trash can.
Recycle Cans, Bottles, and Paper. Save them at home and at school, and help your family recycle them.
Help Keep the Air Clean. Ride your bike or walk to school. ...
Save Paper. ...
Help Save Water.
