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Troll Question:
What human species are we?
Question:
What makes up our nervous system?
Question:
What is electromagnetic spectrum?
Question:
Define endocrine system
Question:
What is homeostasis?
Question:
What are waves of energy?
Question:
What is radiation?
Question:
Old mobile phones used to communicate through?
Question:
How do we get electricity?
Question:
How many senses do we have?
