1. It vibrates and transmits the movement to three smalls bones that move to the rhythm of the vibratory system waves of the perceived sound sense of sight sense of hearing sense of touch.
2. It is the dark circle in the center of the eye. According to the light intensity the zise can change dermis iris pupil.
3. They are steps to take care of the sight desinfect and protects wound or burns visit the dentist and keep nostrils clean avoid reading in moving vehicles and eating foods rich in vitamin A.
4. There are some steps to protect tact avoid inserting objects and visit the doctor to clean them wash hands after every activity and use gloves to protect your hands brush your teeth and clean tongue.
5. These parts belong to male reproductive system fallopian tubes and scrotum labia and ovary vas deferens and seminal vesicles.
6. They are healthy habits for teenage girls cut the hair once per month take baths and wrap sanitary pads before disposal.
7. They are healthy habits for teenage boys wash and dry the genital area with soap and water change sanitary pads and visit a gynecologist.
8. This illness is part of group of diseases transmitted through food. Diarrhea Malaria.
9. The law prohibits their use and marketing Legal drugs Ilegal drugs Social drugs.
10. They are legally allowed to be sold and used. Social drugs illegal drugs legal drugs.
11. They can be bought without a prescription social drugs legal drugs illegal drugs.
12. It is the most popular social drug that damages the brain, the liver, the heart and the stomach. Alcohol Tabaco drug.
13. They are injuries that leave a visible mark on the skin Open wounds wounds closed wounds.
14. They are produced when the skin is split open or the muscle is torn and blood is expelled. Hemorrhage closed wounds open wounds.
15. They are caused by a severe impact without skin rupture Closed wounds Open wounds wounds.
16. They are injuries caused on the skin, produced by intense heat or direct fire. fractures burns choking.
17. It is the gaseous layer that surrounds the planet. atmosphere hydrosphere lithosphere.
18. It is the layer of water that covers the Earth's surface. lithosphere hydrosphere atmosphere.
19. It can cause floods, droughts and forest fires, among others. Greenhouse effect El niño phenomenon Thermal inversion.
20. It is gas produced by vehicles, the breathing of human beings and carbon. Oxygen Carbon dioxide.
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