If they are trying to convert any measurements or just measure out the chemicals, it wouldn't be very familiar to them so they could make a mistake that can result of too much or too little of the chemicals, which can make the chemicals react differently.
This is called a behavioral pattern. This is something deer have learned over time that gives them an advantage in the wild.
Answer:
the zygote, because it is formed by the sperm and egg cells of both sex
Answer:
The chemical and electrical signals are used by brain for communication,sensation and thought. Brain uses electrical signals from communication.
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