1. Name the main components of air.
2. State the meaning of the term 'Photosynthesis'.
3. State two possible harmful effects of ultraviolet rays.
4. Define the term 'Air pollutant'.
5. Name any two of the gaseous pollutants present in air.
6. List any four causes of air pollution.
Answers
Answer:
1.The air in the atmosphere consists of nitrogen, oxygen, which is the life-sustaining substance for animals and humans, carbon dioxide, water vapour and small amounts of other elements (argon, neon, etc.). Higher in the atmosphere air also contains ozone, helium and hydrogen.
2.Plants absorb sunlight and turn that energy into food; the process is known as photosynthesis. This is a compound word made up of photo (which means "light") and synthesis (which means "to put together"). A plant uses light to put together chemical compounds and turn them into carbohydrates: food. ...
3.Skin cancer (melanoma and nonmelanoma)
Premature aging and other skin damage.
Cataracts and other eye damage.
4.An air pollutant is a material in the air that can have adverse effects on humans and the ecosystem. The substance can be solid particles, liquid droplets, or gases. ... Other examples include carbon monoxide gas from motor vehicle exhausts or sulfur dioxide released from factories.
5.Nitrogen dioxide
Carbon monoxide
6.The Burning of Fossil Fuels. ...
Agricultural Activities. ...
Waste in Landfills. ...
Exhaust From Factories and Industries. ...
Mining Operations. ...
Step-by-step explanation:
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Answer:
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Step-by-step explanation:
1)The main component of air is Nitrogen gas.
2)Photosynthesis is the process in which green plants use sunlight to make their own food. Photosynthesis requires sunlight, chlorophyll, water, and carbon dioxide gas as raw materials. Plants take in water from the soil and carbon dioxide from the air. .
3)Health Effects of UV Radiation
Skin cancer (melanoma and nonmelanoma)
Premature aging and other skin damage.
Cataracts and other eye damage.
Immune system suppression.
4)Air pollution is 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 different types of air pollutants, such as gases, particulates, and biological molecules.
5)Nitrogen dioxide NO2 Brown or orange gas
Carbon monoxide CO Colorless and odorless
Carbon dioxide CO2 Colorless and odorless
Ozone O3 Very reactive
6)The Burning of Fossil Fuels. ...
Agricultural Activities. ...
Waste in Landfills. ...
Exhaust From Factories and Industries. ...
Mining Operations. ...
Indoor Air Pollution. ...
Natural Events.