Crossword puzzle

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Across
  1. 3. I am invisible to your naked eye, floating in the water, food, or sky. Some call me a germ, others a foe, cause I bring diseases wherever I go. Who am I?
  2. 5. I make up most of your muscles and blood, rushing through your veins like a internal flood. Drink eight glasses of me every single day, to flush all the toxic waste far away. What am I?
  3. 8. I change from a solid into a liquid when heated. What am I?
  4. 9. I spread quickly and fill every corner of a room. What am I?
  5. 10. I travel through sneezes, a cough, or a touch, jumping from sick friends to others too much. Malaria, typhoid, and flu are my game, what is this category of disease's name? What am I?
Down
  1. 1. I am a thin, fragile wire inside a glass shell, watching the current to make sure all is well. If the circuit gets overloaded, hot, and too high, I melt myself instantly to save you—and die! What am I?
  2. 2. I am an alloy of nickel and chromium combined, inside your home toaster and iron I'm aligned. When current flows through me, I glow hot and bright, resisting the electron flow with all of my might! What am I?
  3. 4. I am a plate filled with colors so bright, not too heavy, and not too light. With carbs, vitamins, and proteins in line, I keep your body working just fine. What kind of diet am I?
  4. 6. I have the strongest attraction between my particles. What am I?
  5. 7. I am the knob on the wall that you turn with your hand, controlling how fast the ceiling fan fans. By changing resistance, I alter the flow, making the breeze speed up or go slow! What am I?