No B. its false<span> they do not. Lyphnodes are a permant part of the body and you have them in your Neck</span>
Answer:
160m/s
Explanation:
The speed of a wave is related to its frequency and wavelength, according to this equation:
v=f ×λ
A plane mirror forms an upright virtual image.
Answer:
when you push up and down the pencil right in the middle of the water tank. it will produce ripples. If seen at the perfect angle you will observe the waves
Explanation:
