3. Why do mountaineers carry oxygen cylinders while trekking at high altitudes? 4. Nitrogen is not required for respiration. True or False? 5. Oxygen is completely soluble in water. True or False? 6. Oxygen gas is combustible in nature. True or False? 7. Carbon dioxide is colourless and odourless but has a sour taste. True or False 8. What is humidity? 9. What is air pollution? 10. There are solid particulate present in air. True or False?
Answers
Answer:
3. It is because when they climb mountains, as altitude increases, the amount of oxygen level in the atmospheric air decreases as trees are not found at higher altitudes
4. false
5. true
6. false
7. false
8. Humidity is the amount of water vapor in the air. If there is a lot of water vapor in the air, the humidity will be high. The higher the humidity, the wetter it feels outside. On the weather reports, humidity is usually explained as relative humidity
9. Air pollution is the contamination of air due to the presence of substances in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. There are many different types of air pollutants, such as gases, particulates, and biological molecules.
10. true
Explanation:
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