The knee is were most injures happen. ways to prevent them is to wear knee pads and such so if you trip and fall.
Well, I don't do so...
Have a beautiful and joyful day ahead.
Answer:
A buffer
Explanation:
A buffer is composed of a weak acid and a conjugate base. They are resistant to pH because of equilibrium between the acid and its conjugate base.
D. a condition characterized by delusions and confused thinkig
