The difference between analog and digital signals is that an analog signal is a continuous electrical message while digital is a series of values that represent information. Analog is conveyed by electrical current variations.
Answer:
Everybody knows that some organs in the human body are necessary for survival: you need your brain, your heart, your lungs, your kidneys...
KIDNEYS? Absolutely. Even though you won't find a Valentine's Day card with a kidney on the cover, the kidneys are every bit as important as the heart. You need at least one kidney to live!
The population of the burrowing owl will be reduced or even become extinct
