In our activity today, we are going to see one way that the body actually communicates with itself ─ through hormones. In fact, engineers are the ones who design all the cool new technologies that help us communicate with friends far away, like cell phones, emails and text messaging. Engineers would not be able to let you know what cool new technologies they have designed to help people out. If we could not communicate, then we could not let others know what we are thinking, or when we are sad or happy. Astronauts need to be able to communicate with ground control on Earth while they are exploring space. Why do you think communication is important? Well, communication helps engineers, astronauts and anyone to get ideas across to each other.
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