Answer:
Mutation in influenza virus occurs frequently.
Explanation:
It is possible for the influenza virus to increase in different tissues during each subsequent year, and immune memory is limited only to those tissues that have been initially infected.
The initial nfection with influenza weakens the immune system.
Mutation in the influenza virus occurs frequently.
Most likely Parkinson’s disease or als
Toe touches ,
Sit ups
Leg lifts
True
In the standard pushup, the following muscles are targeted:
chest muscles, or pectorals.
shoulders, or deltoids.
back of your arms, or triceps.
abdominals.
the “wing” muscles directly under your armpit, called the serratus anterior.
