Maybe to see if the gas was safe to mammals and if not, what the effects were.
Before it’s about to divide
Answer:
You need Light for Chlorophyll activation
So I guess its The Light Absorbing Pigment.
<span>"To increase the production of milk in a herd of milk cows, the highest producing cows were chosen as the mothers." is selective breeding because they selectively chose which cows to breed.
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