One of your patients visited your clinic because she is experiencing the following symptoms:

Severe aches in muscles and joints
Pain around the eyes
Weakness
Warm, flushed skin
Headache
Dry cough
As an experienced doctor, you quickly recognize that this patient has influenza (flu). You prescribe rest, plenty of fluids and medicine to relieve the symptoms. You tell the patient, she will probably feel bad for about a week to 10 days.

A month later this same patient returns to your office with the same symptoms as before. The patient claims that the flu came back and that she must have never fully recovered.

As the patient's physician, how would you most likely explain this?

reflection is the bouncing back of a propagating wave when it encounters a barrier; usually shows an image of the source of light wave

1) bounces back from an opaque material

2) bounces back from the boundary

3) seen in mirrors

refraction is the bending of a propagating wave having a shift of direction as it passes through different media; usually seen in lenses to magnify or lessen

1) passes through a prism

2) moves from one medium to another

3) seen in lenses

the right option is; decreased genetic variation  

decreased genetic variation describes the effect of this environmental change.

genetic variation is the naturally occurring genetic diversities or differences between organisms of the same species in a population. genetic variation allows the survival and adaptability of a species when they encounter changing environmental conditions. when an endangered species reduces, it loses genetic variation which may not be restored even if the species rebound and will only be recovered through the gradual collection of mutations over many years.

these objects are classified under the concussion or idiophone group.