PAGEM
I
when celebrate
ozone protection day ?
2
? what a
percentage of Nitrogen gas in air?
3, what is percentage of air contain nitrogen and
oxygrn gas only ?
4
what is percentage of oxyen gos in air?
5
where do we find the maximen preparation
water on earth?
6
the two major component of air?
7
which gas mainly responsible global euerming ?
8
which component of air is necessary for burning?
9
which gas not constituents of air ?
10
respiration take place in fish with the help of ________?
Answers
Answer:
1. 16 september
2.78%
3.
4.21%
5.
6.oxygen,nitrogen
7.carbon dioxide
8.oxygen
9.manganese dioxide
10. gills
Explanation:
1. Wednesday, 16 September
International Day for the Preservation of the Ozone Layer 2020
2. 78 percentage nitrogen present in air
3. It's a mixture of different gases. The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen
4. 21 percent oxygen
5. About three-quarters of Earth's freshwater is stored in glaciers. Therefore, glacier ice is the second largest reservoir of water on Earth and the largest reservoir of freshwater on Earth!
6. Standard dry air, which is mainly composed of three gases: nitrogen (about 78%), oxygen (about 21%), and argon (about 1%). Together, these three gases make up 99.96% of dry air.
7. Properties of Carbon Dioxide. Carbon dioxide (CO2) is the primary greenhouse gas emitted through human activities. In 2018, CO2 accounted for about 81.3 percent of all U.S. greenhouse gas emissions from human activities
8. Oxygen
Oxygen. Air contains about 21 percent oxygen, and most fires require at least 16 percent oxygen content to burn. Oxygen supports the chemical processes that occur during fire. When fuel burns, it reacts with oxygen from the surrounding air, releasing heat and generating combustion products (gases, smoke, embers, etc.).
9. Manganese dioxide
Manganese dioxide is not a constituent of the atmosphere.
10. gills
Respiration in fish takes place with the help of gills. Most fish possess gills on either side of their head. Gills are tissues made up of feathery structures called gill filaments providing a large surface area for exchange of gases.